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weather-stage-2: 7d/30d daily-aggregate charts (min/max bands and EPA-colored AQI bars) for the India Weather dashboard (Claude Code conversation)
▐▛███▜▌ Claude Code v2.1.123
▝▜█████▛▘ Sonnet 4.6 · Claude Max
▘▘ ▝▝ ~/repos/garg-aayush.github.io
❯ Currently, this is how the values look over the 7d and 30d period, I dont
this that is the best way to view the values over the 7d or 30d period? What
is the standard way to show these values? [Image #1]
⎿  [Image #1]
⏺ The standard approach for 7d/30d weather charts is daily aggregation with
min/max bands instead of raw 6-hourly points.
What you're seeing now is the daily cycle (day/night oscillation) creating a
sawtooth pattern -- visually noisy and hard to read trends from.
The industry standard (used by weather.com, Windy, Weather Underground, etc.):
- Temperature: shaded band between daily min and max, with a line for the
daily mean
- Humidity: same -- min/max band + daily mean line
- AQI: daily average as a line (or bars with AQI color bands:
good/moderate/unhealthy)
This immediately communicates:
1. The trend over the period (are temps rising?)
2. The daily range / variability (is it volatile?)
Without the distracting intraday noise.
For your 24h view, keeping raw 15-min/hourly points makes sense. But for
7d/30d, aggregate client-side to daily { min, max, mean } before plotting.
Want me to implement this? It would be a JS change in
static/india-weather/india-weather.js -- aggregate the points_7d / points_30d
arrays by calendar day and switch to a uPlot band series for 7d/30d modes.
✻ Churned for 17s
❯ /model
⎿ Set model to Opus 4.7 (1M context) (default)
❯ /model
⎿ Set model to Opus 4.7 (1M context) (default) with high effort
❯ Let's implement this change where, instead of daily cycle, when someone asks
to show 7-day or 30-day data, we show the minimum and maximum temperature
with a line for the daily mean temperature. You suggest the same for
humidity. Let's go ahead with it, and AQI also we show in the standard
format. Moreover, that means we don't have to save the data over the 7-day or
30-day period. What we need to do is maybe have a cron job which runs once
daily to fetch the last day's data. Now, because we want to have 30-day data,
we fetch it; after that, every day it runs only once, fetches the data, and
keeps on updating the 30-day period, which is then used both for the 7-day
and 30-day graph. What do you think about this? Make sure to interview me
until you are 95% sure what I actually want to do, not what I think I want to
do.
⏺ Good plan. Before I touch anything, let me lock down the design — a few
decisions I'm not 95% sure about:
1. AQI visualization style — three reasonable options, you said "standard
format" but that's ambiguous:
- (a) Same as temp/humidity: min/max band + daily mean line
- (b) Just a daily mean line (simpler)
- (c) Color-coded bars by AQI category (Good/Moderate/Unhealthy/Hazardous) —
this is what AirVisual/Plume/most AQI dashboards do, and it's the most
informative because AQI categories matter more than exact numbers
Which do you want?
2. 24h view — stays exactly as-is (raw 15-min points from the existing */15
cron, no aggregation)? I assume yes since intraday detail is the whole point
of the 24h view.
3. The existing 15-min cron keeps running for live weather.json (the map
markers + leaderboard), correct? The new daily cron is only for history. Just
confirming I shouldn't touch the 15-min one.
4. Daily boundary — IST or UTC? My recommendation: IST midnight-to-midnight,
because the cities are in India and a user looking at "April 27" mentally maps
that to their local day. UTC would cut days at 5:30 AM IST which is weird.
5. Resilience design — your phrasing was "fetch the last day's data" once
daily. I'd push back slightly: GitHub cron is flaky (your own CLAUDE.md notes
drift of 30–60 min and dropped runs). A more robust design that costs nothing
extra:
▎ Each daily run re-fetches the entire last 30 days from Open-Meteo's archive
▎ API and rewrites the file from scratch.
This means: missed runs self-heal automatically, no separate bootstrap
workflow needed, no append/merge logic to get wrong. Open-Meteo's archive is
free, no token, ~3KB per city per request. Trade-off: ~30× more API calls per
run, but it's once a day across ~10 cities, so trivial.
OK with this, or do you specifically want incremental "yesterday only"
appends?
6. Existing history-<id>.json files on the data branch — discard and rebuild
in the new daily-aggregate schema? (They're 15-min/hourly/6-hourly raw points,
not compatible.)
7. Per-city schema sanity check — proposed shape:
{
"city_id": "ahmedabad",
"days": [
{ "date": "2026-04-28",
"temp_min": 26.4, "temp_max": 41.2, "temp_mean": 33.8,
"humidity_min": 18, "humidity_max": 62, "humidity_mean": 34,
"aqi_min": 42, "aqi_max": 138, "aqi_mean": 71 }
]
}
Good, or do you want something different (e.g., parallel arrays for
compactness)?
Answer in any order — or just say "all your defaults" and I'll go with my
recommendations on each.
✻ Baked for 1m 5s
❯ 1. c
2. Yup
3. Yes
4. IST midnight to midnight
5. Lets go ahead with your suggestion
6. Yup, whatever is the best practice
7. Lets go ahead with your way
⏺ Got it. Let me read the current state of everything I need to touch, then I'll
create a branch and implement.
Read 8 files, listed 1 directory (ctrl+o to expand)
⏺ I have full context now. Let me create a feature branch and plan the work.
⏺ Bash(git checkout -b india-weather-daily-aggregates)
⎿  Switched to a new branch 'india-weather-daily-aggregates'
⏺ Write(~/repos/garg-aayush/repos/garg-aayush.github.io/scripts/fetch-india-weat
her-daily.mjs)
⎿  Wrote 1 lines to ../garg-aayush/repos/garg-aayush.github.io/scripts/fe
tch-india-weather-daily.mjs
1 placeholder
⏺ Bash(rm -rf /Users/aayushgarg/repos/garg-aayush/repos)
⎿  Done
⏺ Write(scripts/fetch-india-weather-daily.mjs)
⎿  Wrote 258 lines to scripts/fetch-india-weather-daily.mjs
2 // Build per-city daily aggregate files (daily-<id>.json) coveri
ng the last 30
singomplete IST days. Each run rewrites the files from scratch u
4 // Open-Meteo's Forecast API (past_days=30) for temperature + hu
5 // Air Quality API (past_days=30) for US AQI.
6 //
at 02:00 IST.hub/workflows/india-weather-daily.yml once per day
8 // Because each run rebuilds the full 30-day window, missed cron
9 // automatically and no separate bootstrap is needed.
10 //
… +271 lines (ctrl+o to expand)
⏺ Let me test this script locally before moving on, since correctness here is
critical.
⏺ Bash(node scripts/fetch-india-weather-daily.mjs ./tmp-daily 2>&1)
⎿  Fetching weather for 8 cities (past_days=30, tz=Asia/Kolkata)
Wrote /Users/aayushgarg/repos/garg-aayush.github.io/tmp-daily/daily-de
lhi.json (30 days)
… +15 lines (ctrl+o to expand)
⏺ Bash(cat /Users/aayushgarg/repos/garg-aayush.github.io/tmp-daily/daily-ahmedab
ad.json | python3 -m json.tool | head -40)
⎿  {
"city": "ahmedabad",
"name": "Ahmedabad",
… +28 lines (ctrl+o to expand)
⏺ The script works. Now the workflow.
⏺ Bash(rm -rf /Users/aayushgarg/repos/garg-aayush.github.io/tmp-daily)
⎿  Done
⏺ Write(.github/workflows/india-weather-daily.yml)
⎿  Wrote 76 lines to .github/workflows/india-weather-daily.yml
2 name: India Weather Daily Aggregates
3 # Once-daily build of per-city daily-aggregate files (last 30 co
4 # days of temperature, humidity, US AQI). Each run rewrites the
files from
ate bootstrapm Open-Meteo, so missed runs self-heal and no separ
6 # is needed. Force-pushes to the orphan `data` branch alongside
7 # and history-*.json (which are owned by india-weather-data.yml)
.
9 on:
10 schedule:
… +76 lines (ctrl+o to expand)
⏺ Write(scripts/fetch-india-weather.mjs)
⎿  Added 7 lines, removed 56 lines
11 // when its own inputs are malformed.
12 //
13 // History maintenance: when --history-in <dir> and --history-o
ut <dir> are
14 -// provided, the script reads the existing per-city history-<id
->.json files,
15 -// appends a new point to points_24h, and (on hourly / 6-hourly
- boundaries)
16 -// extends points_7d / points_30d. The chart-friendly AQI value
- is pulled from
17 -// Open-Meteo Air Quality so the historical series has a single
-, backfillable
18 -// source. WAQI continues to feed the live tile only.
14 +// provided, the script reads the existing per-city history-<id
+>.json files and
15 +// appends a new point to points_24h (used for the 24h chart vi
+ew). The 7d / 30d
16 +// chart views are owned by scripts/fetch-india-weather-daily.m
+js and are not
17 +// touched here. The chart-friendly AQI value is pulled from Op
+en-Meteo Air
18 +// Quality so the historical series has a single, backfillable
+source.
19
20 import { readFileSync, writeFileSync, existsSync, mkdirSync } f
rom 'node:fs';
21 import { fileURLToPath } from 'node:url';
...
33 const WAQI_TOKEN = process.env.WAQI_TOKEN || '';
34
35 const HOURS_24 = 24;
36 -const HOURS_7D = 7 * 24;
37 -const HOURS_30D = 30 * 24;
36
37 function parseFlags(argv) {
38 const out = {};
...
107 }
108
109 // Single Open-Meteo Air Quality call (multi-coord) returning
the most recent
112 -// hourly US AQI value per city. Used only for the chart histo
-ry series.
110 +// hourly US AQI value per city. Used only for the 24h chart h
+istory series.
111 async function fetchOpenMeteoAqi(cities) {
112 const lats = cities.map(c => c.lat).join(',');
113 const lons = cities.map(c => c.lon).join(',');
...
195 generated_at: new Date().toISOString(),
196 source: { weather: 'open-meteo', aqi: 'open-meteo-air-qual
ity' },
197 points_24h: [],
200 - points_7d: [],
201 - points_30d: [],
198 };
199 }
200
...
210 generated_at: parsed.generated_at || new Date().toISOStr
ing(),
211 source: parsed.source || { weather: 'open-meteo', aqi: '
open-meteo-air-quality' },
212 points_24h: Array.isArray(parsed.points_24h) ? parsed.po
ints_24h : [],
217 - points_7d: Array.isArray(parsed.points_7d) ? parsed.po
-ints_7d : [],
218 - points_30d: Array.isArray(parsed.points_30d) ? parsed.po
-ints_30d : [],
213 };
214 } catch (err) {
215 console.warn('Failed to read existing history for', city.i
d, ':', err.message, '— starting empty.');
...
224 });
225 }
226
233 -function avg(arr) {
234 - const xs = arr.filter(v => v != null && Number.isFinite(v));
235 - if (xs.length === 0) return null;
236 - return Math.round((xs.reduce((s, v) => s + v, 0) / xs.length
-) * 10) / 10;
237 -}
238 -
239 -// Append a new point to the rolling 24h list, then maybe exte
-nd the 7d / 30d
240 -// series if enough wall-clock time has elapsed since their la
-st entry.
227 function updateHistory(history, point, nowMs) {
242 - const cutoff24 = nowMs - HOURS_24 * 3600 * 1000;
243 - const cutoff7 = nowMs - HOURS_7D * 3600 * 1000;
244 - const cutoff30 = nowMs - HOURS_30D * 3600 * 1000;
245 -
228 + const cutoff24 = nowMs - HOURS_24 * 3600 * 1000;
229 const points_24h = trimByCutoff(history.points_24h, cutoff24
).concat([point]);
247 -
248 - let points_7d = trimByCutoff(history.points_7d, cutoff7);
249 - const last7 = points_7d[points_7d.length - 1];
250 - const last7Ms = last7 ? new Date(last7.t).getTime() : -Infin
-ity;
251 - if (nowMs - last7Ms >= 60 * 60 * 1000 - 60 * 1000) { // ~1h
-elapsed (60s slack)
252 - // Average over the most recent hour of 24h points (post-a
-ppend).
253 - const hourCutoff = nowMs - 60 * 60 * 1000;
254 - const recentHour = points_24h.filter(p => new Date(p.t).ge
-tTime() >= hourCutoff);
255 - points_7d = points_7d.concat([{
256 - t: new Date(nowMs).toISOString(),
257 - temp: avg(recentHour.map(p => p.temp)),
258 - humidity: avg(recentHour.map(p => p.humidity)),
259 - aqi: avg(recentHour.map(p => p.aqi)),
260 - }]);
261 - }
262 -
263 - let points_30d = trimByCutoff(history.points_30d, cutoff30);
264 - const last30 = points_30d[points_30d.length - 1];
265 - const last30Ms = last30 ? new Date(last30.t).getTime() : -In
-finity;
266 - if (nowMs - last30Ms >= 6 * 60 * 60 * 1000 - 60 * 1000) { //
- ~6h elapsed
267 - const sixHourCutoff = nowMs - 6 * 60 * 60 * 1000;
268 - const recent6h = points_24h.filter(p => new Date(p.t).getT
-ime() >= sixHourCutoff);
269 - points_30d = points_30d.concat([{
270 - t: new Date(nowMs).toISOString(),
271 - temp: avg(recent6h.map(p => p.temp)),
272 - humidity: avg(recent6h.map(p => p.humidity)),
273 - aqi: avg(recent6h.map(p => p.aqi)),
274 - }]);
275 - }
276 -
230 return {
231 ...history,
232 generated_at: new Date(nowMs).toISOString(),
233 points_24h,
281 - points_7d,
282 - points_30d,
234 };
235 }
236
⏺ Now update the 15-min workflow to share the concurrency group with the daily
cron and carry forward daily-*.json.
⏺ Update(.github/workflows/india-weather-data.yml)
⎿  Added 3 lines, removed 1 line
9 contents: write
10
11 concurrency:
12 - group: india-weather-data
12 + # Shared with india-weather-daily.yml so the 15-min and daily
+ crons cannot
13 + # race-clobber each other when force-pushing the orphan `data
+` branch.
14 + group: india-weather-data-publish
15 cancel-in-progress: false
16
17 jobs:
⏺ Update(.github/workflows/india-weather-data.yml)
⎿  Added 7 lines, removed 1 line
63 git config user.email "41898282+github-actions[bot]@u
sers.noreply.github.com"
64
65 # Use a worktree-free orphan branch so the data branc
h always
66 - # contains exactly one commit with weather.json + his
-tory-*.json.
66 + # contains exactly one commit. Carry forward daily-*.
+json from the
67 + # prior data branch state so we don't blow away the d
+aily cron's
68 + # outputs (owned by india-weather-daily.yml).
69 git checkout --orphan data-tmp
70 git rm -rf --cached . >/dev/null 2>&1 || true
71 git add -f weather.json
...
73 cp history-out/history-*.json .
74 git add -f history-*.json
75 fi
76 + if compgen -G "../data-existing/daily-*.json" > /dev/
+null; then
77 + cp ../data-existing/daily-*.json .
78 + git add -f daily-*.json
79 + fi
80 git -c commit.gpgsign=false commit -m "chore(data): u
pdate weather.json $(date -u +%FT%TZ)"
81 git push --force origin HEAD:data
⏺ Bash(git rm .github/workflows/india-weather-bootstrap.yml
scripts/bootstrap-india-weather-history.mjs)
⎿  rm '.github/workflows/india-weather-bootstrap.yml'
rm 'scripts/bootstrap-india-weather-history.mjs'
⏺ Now the client JS rewrite. This is the biggest change — different chart types
per range.
⏺ Write(static/india-weather/india-weather.js)
⎿  Added 280 lines, removed 87 lines
1 // India Weather: client-side renderer.
2 -// Data is fetched from a JSON file refreshed every ~15 minutes
-by a GitHub Actions cron.
2 +// Live tile data is fetched from weather.json (refreshed every
+15 minutes).
3 +// 24h history comes from history-<id>.json (15-min cadence).
4 +// 7d / 30d history comes from daily-<id>.json (one entry per IS
+T day with
5 +// min/max/mean for temp, humidity, and US AQI).
6 (function () {
7 'use strict';
8
...
42
43 let activeRange = '24h';
44 let activeHistoryCity = null;
42 - const historyCache = new Map(); // cityId -> { points_24h, po
-ints_7d, points_30d, generated_at }
43 - const inflightHistory = new Map(); // cityId -> Promise
45 + // Hourly history (24h view) and daily aggregates (7d / 30d)
+are fetched
46 + // and cached independently so switching ranges doesn't refet
+ch.
47 + const hourlyCache = new Map(); // cityId -> { points_24h, .
+.. }
48 + const dailyCache = new Map(); // cityId -> { days: [...] }
49 + const inflightHourly = new Map();
50 + const inflightDaily = new Map();
51 const charts = { aqi: null, temp: null, humidity: null };
52
53 + // US AQI category breakpoints (Open-Meteo Air Quality is on
+the US AQI
54 + // scale, not CPCB; the live tile uses CPCB and is shown sepa
+rately).
55 + const US_AQI_CATEGORIES = [
56 + { max: 50, name: 'Good', fill: '#0
+0E400', text: '#111' },
57 + { max: 100, name: 'Moderate', fill: '#F
+FFF00', text: '#111' },
58 + { max: 150, name: 'Unhealthy for sensitive grps', fill: '#F
+F7E00', text: '#111' },
59 + { max: 200, name: 'Unhealthy', fill: '#F
+F0000', text: '#fff' },
60 + { max: 300, name: 'Very unhealthy', fill: '#8
+F3F97', text: '#fff' },
61 + { max: Infinity, name: 'Hazardous', fill: '#7
+E0023', text: '#fff' },
62 + ];
63 +
64 + function aqiCategory(value) {
65 + if (value == null || !Number.isFinite(value)) {
66 + return { name: 'No data', fill: 'rgba(255,255,255,0.18)',
+ text: '#9aa0a6' };
67 + }
68 + for (const c of US_AQI_CATEGORIES) {
69 + if (value <= c.max) return c;
70 + }
71 + return US_AQI_CATEGORIES[US_AQI_CATEGORIES.length - 1];
72 + }
73 +
74 function setStatus(msg, isError) {
75 if (!elStatus) return;
76 if (msg == null) {
...
282 loadAndRenderHistory(id);
283 }
284
257 - async function loadAndRenderHistory(cityId, forceFresh) {
258 - if (!cityId) return;
259 - if (!forceFresh && historyCache.has(cityId)) {
260 - renderCharts(historyCache.get(cityId));
261 - return;
285 + // Fetch the right file for the active range. 24h uses hourl
+y history;
286 + // 7d / 30d both share the same daily-aggregate file (just d
+ifferent slices).
287 + function fetchForRange(cityId, range, forceFresh) {
288 + if (range === '24h') {
289 + return fetchCachedJson({
290 + cityId, forceFresh,
291 + cache: hourlyCache,
292 + inflight: inflightHourly,
293 + remoteFile: 'history-' + cityId + '.json',
294 + sampleFile: 'history-' + cityId + '.sample.json',
295 + });
296 }
263 - setHistoryStatus('Loading history…');
264 - try {
265 - const data = await fetchCityHistory(cityId, forceFresh);
266 - historyCache.set(cityId, data);
267 - if (cityId === activeHistoryCity) {
268 - renderCharts(data);
269 - setHistoryStatus('');
270 - }
271 - } catch (err) {
272 - console.warn('History load failed for', cityId, err);
273 - if (cityId === activeHistoryCity) {
274 - setHistoryStatus('Could not load history for this city
-.', true);
275 - clearCharts();
276 - }
277 - }
297 + return fetchCachedJson({
298 + cityId, forceFresh,
299 + cache: dailyCache,
300 + inflight: inflightDaily,
301 + remoteFile: 'daily-' + cityId + '.json',
302 + sampleFile: 'daily-' + cityId + '.sample.json',
303 + });
304 }
305
280 - async function fetchCityHistory(cityId, forceFresh) {
281 - if (inflightHistory.has(cityId) && !forceFresh) return inf
-lightHistory.get(cityId);
282 - const file = 'history-' + cityId + '.json';
283 - const sampleFile = 'history-' + cityId + '.sample.json';
306 + function fetchCachedJson({ cityId, forceFresh, cache, inflig
+ht, remoteFile, sampleFile }) {
307 + if (!forceFresh && cache.has(cityId)) return Promise.resol
+ve(cache.get(cityId));
308 + if (!forceFresh && inflight.has(cityId)) return inflight.g
+et(cityId);
309 const candidates = useLocal
310 ? ['/static/india-weather/' + sampleFile]
286 - : [HISTORY_REMOTE_BASE + file, '/static/india-weather/'
-+ sampleFile];
311 + : [HISTORY_REMOTE_BASE + remoteFile, '/static/india-weat
+her/' + sampleFile];
312 const promise = (async () => {
313 let lastErr = null;
314 for (const base of candidates) {
...
316 try {
317 const r = await fetch(url, forceFresh ? { cache: 'no
-store' } : {});
318 if (!r.ok) throw new Error('HTTP ' + r.status);
294 - return await r.json();
319 + const data = await r.json();
320 + cache.set(cityId, data);
321 + return data;
322 } catch (err) {
323 lastErr = err;
324 }
325 }
326 throw lastErr || new Error('no sources');
327 })();
301 - inflightHistory.set(cityId, promise);
328 + inflight.set(cityId, promise);
329 + try { return promise; }
330 + finally { /* cleanup happens in then/finally below */ }
331 + }
332 +
333 + async function loadAndRenderHistory(cityId, forceFresh) {
334 + if (!cityId) return;
335 + setHistoryStatus('Loading history…');
336 try {
303 - return await promise;
337 + const data = await fetchForRange(cityId, activeRange, fo
+rceFresh);
338 + if (cityId !== activeHistoryCity) return;
339 + renderCharts(cityId);
340 + setHistoryStatus('');
341 + } catch (err) {
342 + console.warn('History load failed for', cityId, activeRa
+nge, err);
343 + if (cityId === activeHistoryCity) {
344 + setHistoryStatus('Could not load history for this city
+.', true);
345 + clearCharts();
346 + }
347 } finally {
305 - inflightHistory.delete(cityId);
348 + // Always free the inflight slot.
349 + inflightHourly.delete(cityId);
350 + inflightDaily.delete(cityId);
351 }
352 }
353
309 - function pickSeries(history, range) {
310 - if (range === '7d') return history.points_7d || [];
311 - if (range === '30d') return history.points_30d || [];
312 - return history.points_24h || [];
354 + // -- Chart helpers ----------------------------------------
+-----------------
355 +
356 + function chartContainer(id) {
357 + return document.getElementById(id);
358 }
359
315 - function toUplotData(points, key) {
360 + function chartSize(el) {
361 + const rect = el.getBoundingClientRect();
362 + return { width: Math.max(280, Math.floor(rect.width)), hei
+ght: 200 };
363 + }
364 +
365 + function destroyChart(slot) {
366 + if (charts[slot]) {
367 + try { charts[slot].destroy(); } catch (e) { /* ignore */
+ }
368 + charts[slot] = null;
369 + }
370 + }
371 +
372 + function clearCharts() {
373 + for (const slot of Object.keys(charts)) destroyChart(slot)
+;
374 + }
375 +
376 + function themeColors() {
377 + const css = getComputedStyle(document.documentElement);
378 + return {
379 + text: (css.getPropertyValue('--text-muted') || '#9aa0a6'
+).trim(),
380 + grid: (css.getPropertyValue('--border-color') || '#2e2e3
+3').trim(),
381 + };
382 + }
383 +
384 + // -- 24h: simple line charts (existing behavior) ----------
+----------------
385 +
386 + function pointsToLine(points, key) {
387 const xs = [];
388 const ys = [];
318 - for (const p of points) {
389 + for (const p of points || []) {
390 const ms = new Date(p.t).getTime();
391 if (!Number.isFinite(ms)) continue;
392 const v = p[key];
...
396 return [xs, ys];
397 }
398
328 - function chartContainer(id) {
329 - return document.getElementById(id);
399 + function buildLineOpts(title, color, valueFmt, size) {
400 + const t = themeColors();
401 + return {
402 + width: size.width,
403 + height: size.height,
404 + cursor: { drag: { x: false, y: false } },
405 + legend: { show: false },
406 + scales: { x: { time: true } },
407 + axes: [
408 + { stroke: t.text, grid: { stroke: t.grid, width: 0.5 }
+, ticks: { stroke: t.grid, width: 0.5 } },
409 + {
410 + stroke: t.text,
411 + grid: { stroke: t.grid, width: 0.5 },
412 + ticks: { stroke: t.grid, width: 0.5 },
413 + values: (u, splits) => splits.map(v => valueFmt(v)),
414 + },
415 + ],
416 + series: [
417 + {},
418 + { label: title, stroke: color, width: 1.6, points: { s
+how: false }, spanGaps: false,
419 + value: (u, v) => (v == null ? '—' : valueFmt(v)) },
420 + ],
421 + };
422 }
423
332 - function chartSize(el) {
333 - const rect = el.getBoundingClientRect();
334 - return { width: Math.max(280, Math.floor(rect.width)), hei
-ght: 200 };
424 + function renderLineChart(slot, containerId, title, color, va
+lueFmt, points, key) {
425 + const el = chartContainer(containerId);
426 + if (!el) return;
427 + destroyChart(slot);
428 + const opts = buildLineOpts(title, color, valueFmt, chartSi
+ze(el));
429 + charts[slot] = new uPlot(opts, pointsToLine(points, key),
+el);
430 }
431
337 - function buildChartOptions(title, color, valueFmt, size) {
338 - const css = getComputedStyle(document.documentElement);
339 - const text = (css.getPropertyValue('--text-muted') || '#9a
-a0a6').trim();
340 - const grid = (css.getPropertyValue('--border-color') || '#
-2e2e33').trim();
432 + // -- 7d / 30d: band charts (temp, humidity) and category ba
+rs (AQI) -------
433 +
434 + function daySliceForRange(daily, range) {
435 + const days = (daily && Array.isArray(daily.days)) ? daily.
+days : [];
436 + if (range === '7d') return days.slice(-7);
437 + if (range === '30d') return days.slice(-30);
438 + return days;
439 + }
440 +
441 + // Convert "YYYY-MM-DD" (IST date) to a unix timestamp (seco
+nds) at IST noon.
442 + // Noon centers daily x-positions on the day so bar charts a
+nd labels align
443 + // visually under the date.
444 + function istDateToTs(date) {
445 + // 12:00 IST = 06:30 UTC
446 + const ms = Date.parse(date + 'T06:30:00Z');
447 + return Number.isFinite(ms) ? Math.floor(ms / 1000) : null;
448 + }
449 +
450 + function daysToBandData(days, keyMin, keyMax, keyMean) {
451 + const xs = [], mins = [], maxs = [], means = [];
452 + for (const d of days) {
453 + const ts = istDateToTs(d.date);
454 + if (ts == null) continue;
455 + xs.push(ts);
456 + mins.push(d[keyMin] == null || !Number.isFinite(d[keyMin
+]) ? null : d[keyMin]);
457 + maxs.push(d[keyMax] == null || !Number.isFinite(d[keyMax
+]) ? null : d[keyMax]);
458 + means.push(d[keyMean] == null || !Number.isFinite(d[keyM
+ean]) ? null : d[keyMean]);
459 + }
460 + return [xs, mins, maxs, means];
461 + }
462 +
463 + function buildBandOpts(title, color, bandColor, valueFmt, si
+ze) {
464 + const t = themeColors();
465 return {
466 width: size.width,
467 height: size.height,
...
469 legend: { show: false },
470 scales: { x: { time: true } },
471 axes: [
472 + { stroke: t.text, grid: { stroke: t.grid, width: 0.5 }
+, ticks: { stroke: t.grid, width: 0.5 } },
473 {
349 - stroke: text,
350 - grid: { stroke: grid, width: 0.5 },
351 - ticks: { stroke: grid, width: 0.5 },
352 - },
353 - {
354 - stroke: text,
355 - grid: { stroke: grid, width: 0.5 },
356 - ticks: { stroke: grid, width: 0.5 },
474 + stroke: t.text,
475 + grid: { stroke: t.grid, width: 0.5 },
476 + ticks: { stroke: t.grid, width: 0.5 },
477 values: (u, splits) => splits.map(v => valueFmt(v)),
478 },
479 ],
480 series: [
481 {},
362 - {
363 - label: title,
364 - stroke: color,
365 - width: 1.6,
366 - points: { show: false },
367 - spanGaps: false,
368 - value: (u, v) => (v == null ? '—' : valueFmt(v)),
369 - },
482 + // min and max are invisible lines — they only exist s
+o the band fill
483 + // has something to reference. They show in the cursor
+ tooltip though.
484 + { label: 'min', stroke: 'transparent', fill: undefined
+, width: 0,
485 + points: { show: false }, value: (u, v) => (v == null
+ ? '—' : valueFmt(v)) },
486 + { label: 'max', stroke: 'transparent', fill: undefined
+, width: 0,
487 + points: { show: false }, value: (u, v) => (v == null
+ ? '—' : valueFmt(v)) },
488 + { label: title, stroke: color, width: 1.8,
489 + points: { show: false }, spanGaps: false,
490 + value: (u, v) => (v == null ? '—' : valueFmt(v)) },
491 ],
492 + bands: [
493 + { series: [2, 1], fill: bandColor },
494 + ],
495 };
496 }
497
374 - function ensureChart(slot, containerId, title, color, valueF
-mt) {
498 + function renderBandChart(slot, containerId, title, color, ba
+ndColor, valueFmt, days, keyMin, keyMax, keyMean) {
499 const el = chartContainer(containerId);
376 - if (!el) return null;
377 - const size = chartSize(el);
378 - if (charts[slot]) {
379 - charts[slot].setSize(size);
380 - return charts[slot];
381 - }
382 - const opts = buildChartOptions(title, color, valueFmt, siz
-e);
383 - charts[slot] = new uPlot(opts, [[], []], el);
384 - return charts[slot];
500 + if (!el) return;
501 + destroyChart(slot);
502 + const opts = buildBandOpts(title, color, bandColor, valueF
+mt, chartSize(el));
503 + charts[slot] = new uPlot(opts, daysToBandData(days, keyMin
+, keyMax, keyMean), el);
504 }
505
387 - function clearCharts() {
388 - for (const k of Object.keys(charts)) {
389 - if (charts[k]) charts[k].setData([[], []]);
506 + function renderAqiBarChart(containerId, days) {
507 + const el = chartContainer(containerId);
508 + if (!el) return;
509 + destroyChart('aqi');
510 +
511 + const xs = [], means = [], fills = [];
512 + for (const d of days) {
513 + const ts = istDateToTs(d.date);
514 + if (ts == null) continue;
515 + xs.push(ts);
516 + const v = (d.aqi_mean != null && Number.isFinite(d.aqi_m
+ean)) ? d.aqi_mean : null;
517 + means.push(v);
518 + fills.push(aqiCategory(v).fill);
519 }
520 +
521 + const t = themeColors();
522 + // Pick a bar size that scales with point density: ~70% of
+ slot width.
523 + const barFactor = days.length > 14 ? 0.55 : 0.65;
524 +
525 + const opts = {
526 + width: chartSize(el).width,
527 + height: chartSize(el).height,
528 + cursor: { drag: { x: false, y: false } },
529 + legend: { show: false },
530 + scales: { x: { time: true }, y: { range: (u, lo, hi) =>
+[0, Math.max(50, hi)] } },
531 + axes: [
532 + { stroke: t.text, grid: { stroke: t.grid, width: 0.5 }
+, ticks: { stroke: t.grid, width: 0.5 } },
533 + {
534 + stroke: t.text,
535 + grid: { stroke: t.grid, width: 0.5 },
536 + ticks: { stroke: t.grid, width: 0.5 },
537 + values: (u, splits) => splits.map(v => Math.round(v)
+),
538 + },
539 + ],
540 + series: [
541 + {},
542 + {
543 + label: 'AQI',
544 + stroke: 'transparent',
545 + width: 0,
546 + points: { show: false },
547 + paths: uPlot.paths.bars({
548 + size: [barFactor, 60, 1],
549 + align: 0,
550 + disp: {
551 + fill: { unit: 3, values: () => fills },
552 + stroke: { unit: 3, values: () => fills },
553 + },
554 + }),
555 + value: (u, v, sIdx, pIdx) => {
556 + if (v == null) return '—';
557 + const d = days[pIdx] || {};
558 + const cat = aqiCategory(v).name;
559 + return Math.round(v) + ' (min ' + (d.aqi_min ?? '
+—') + ' / max ' + (d.aqi_max ?? '—') + ') · ' + cat;
560 + },
561 + },
562 + ],
563 + };
564 +
565 + charts.aqi = new uPlot(opts, [xs, means], el);
566 }
567
393 - function renderCharts(history) {
568 + function renderCharts(cityId) {
569 if (typeof uPlot === 'undefined') return;
395 - const points = pickSeries(history, activeRange);
396 - const aqi = ensureChart('aqi', 'iw-chart-aqi', 'AQI', '#75
-A8D9', v => Math.round(v));
397 - const temp = ensureChart('temp', 'iw-chart-temp', 'Temp',
-'#E8A87C', v => v.toFixed(1) + '°');
398 - const hum = ensureChart('humidity', 'iw-chart-humidity', '
-Humidity', '#7CC4A1', v => Math.round(v) + '%');
399 - if (aqi) aqi.setData(toUplotData(points, 'aqi'));
400 - if (temp) temp.setData(toUplotData(points, 'temp'));
401 - if (hum) hum.setData(toUplotData(points, 'humidity'));
570 +
571 + if (activeRange === '24h') {
572 + const hourly = hourlyCache.get(cityId);
573 + const points = (hourly && Array.isArray(hourly.points_24
+h)) ? hourly.points_24h : [];
574 + renderLineChart('aqi', 'iw-chart-aqi', 'AQI',
+ '#75A8D9',
575 + v => Math.round(v), points, 'aqi');
576 + renderLineChart('temp', 'iw-chart-temp', 'Temp',
+ '#E8A87C',
577 + v => v.toFixed(1) + '°', points, 'temp');
578 + renderLineChart('humidity', 'iw-chart-humidity', 'Humidi
+ty', '#7CC4A1',
579 + v => Math.round(v) + '%', points, 'humidity')
+;
580 + return;
581 + }
582 +
583 + const daily = dailyCache.get(cityId);
584 + const days = daySliceForRange(daily, activeRange);
585 +
586 + renderAqiBarChart('iw-chart-aqi', days);
587 +
588 + renderBandChart('temp', 'iw-chart-temp', 'Temp °C',
589 + '#E8A87C', 'rgba(232, 168, 124, 0.22)',
590 + v => v.toFixed(1) + '°',
591 + days, 'temp_min', 'temp_max', 'temp_mean');
592 +
593 + renderBandChart('humidity', 'iw-chart-humidity', 'Humidity
+ %',
594 + '#7CC4A1', 'rgba(124, 196, 161, 0.22)',
595 + v => Math.round(v) + '%',
596 + days, 'humidity_min', 'humidity_max', 'humidity_mean');
597 }
598
599 function resizeCharts() {
...
688 btn.addEventListener('click', () => {
689 elRangeBtns.forEach(b => b.classList.toggle('iw-active
', b === btn));
690 activeRange = btn.dataset.range;
496 - if (activeHistoryCity && historyCache.has(activeHistor
-yCity)) {
497 - renderCharts(historyCache.get(activeHistoryCity));
498 - }
691 + if (activeHistoryCity) loadAndRenderHistory(activeHist
+oryCity);
692 });
693 });
694 let resizeTimer = null;
⏺ Bash(node scripts/fetch-india-weather-daily.mjs static/india-weather/daily-tmp
2>&1 | tail -3)
⎿  Wrote /Users/aayushgarg/repos/garg-aayush.github.io/static/india-weath
er/daily-tmp/daily-pune.json (30 days)
Wrote /Users/aayushgarg/repos/garg-aayush.github.io/static/india-weath
… +3 lines (ctrl+o to expand)
⏺ Bash(cd /Users/aayushgarg/repos/garg-aayush.github.io/static/india-weather &&
for f in daily-tmp/daily-*.json; do base=$(basename "$f" .json); mv "$f"
"${base}.sampl…)
⎿  daily-ahmedabad.sample.json 5.2K
daily-bengaluru.sample.json 5.2K
daily-chennai.sample.json 5.1K
… +5 lines (ctrl+o to expand)
⏺ Bash(node -e '
const fs = require("node:fs");…)
⎿  trimmed history-ahmedabad.sample.json to 25 24h points
trimmed history-bengaluru.sample.json to 25 24h points
trimmed history-chennai.sample.json to 25 24h points
… +5 lines (ctrl+o to expand)
Listed 1 directory (ctrl+o to expand)
⏺ Bash(cd /Users/aayushgarg/repos/garg-aayush.github.io && quarto preview
--no-browser --port 4566 2>&1)
⎿  Running in the background (↓ to manage)
⏺ Bash(sleep 8 && tail -30
/private/tmp/claude-501/-Users-aayushgarg-repos-garg-aayush-github-io/148b
4e6f-298f-456e-aecc-22b76e89a2ad/tasks/b1k8ix6vk.output 2>&1)
⎿  Terminating existing preview server....DONE
Preparing to preview
… +3 lines (ctrl+o to expand)
⏺ Bash(node --check static/india-weather/india-weather.js && echo "JS syntax
OK")
⎿  Error: Exit code 1
node:internal/modules/cjs/loader:1228
throw err;
^
Error: Cannot find module '/Users/aayushgarg/repos/garg-aayush.github.io/st
atic/india-weather/static/india-weather/india-weather.js'
at node:internal/modules/cjs/loader:1225:15
at node:internal/main/check_syntax:33:20 {
code: 'MODULE_NOT_FOUND',
requireStack: []
… +3 lines (ctrl+o to expand)
⏺ Bash(curl -s http://localhost:4566/india-weather.html | head -5 && echo "---"
&& curl -s -I http://localhost:4566/static/india-weather/india-weather.js
| head -3)
⎿  Cancelled: parallel tool call Bash(node --check
static/india-weather/india-…) errored
⏺ Bash(cd / && node --check /Users/aayushgarg/repos/garg-aayush.github.io/static
/india-weather/india-weather.js && echo "JS syntax OK")
⎿  JS syntax OK
⎿  Shell cwd was reset to /Users/aayushgarg/repos/garg-aayush.github.io
⏺ Bash(curl -sI http://localhost:4566/static/india-weather/india-weather.js |
head -3 && echo "---" && curl -s
http://localhost:4566/static/india-weather/daily-ahmedab…)
⎿  HTTP/1.1 200 OK
cache-control: no-store, max-age=0
content-length: 18020
… +6 lines (ctrl+o to expand)
⏺ Bash(curl -sI http://localhost:4566/static/india-weather/weather.sample.json |
head -3 && echo "---" && curl -sI
http://localhost:4566/static/india-weather/history-a…)
⎿  HTTP/1.1 200 OK
cache-control: no-store, max-age=0
content-length: 2655
… +15 lines (ctrl+o to expand)
⏺ Bash(curl -s
http://localhost:4566/static/india-weather/history-ahmedabad.sample.json |
head -c 300)
⎿  {"city":"ahmedabad","name":"Ahmedabad","generated_at":"2026-04-28T18:4
5:56.145Z","source":{"weather":"open-meteo","aqi":"open-meteo-air-qual
ity"},"points_24h":[{"t":"2026-04-27T19:00Z","temp":32.8,...
Listed 2 directories (ctrl+o to expand)
⏺ Bash(cp static/india-weather/daily-*.sample.json _site/static/india-weather/
&& ls _site/static/india-weather/ | grep daily)
⎿  daily-ahmedabad.sample.json 5.2K
daily-bengaluru.sample.json 5.2K
daily-chennai.sample.json 5.1K
… +5 lines (ctrl+o to expand)
⏺ Bash(curl -sI
http://localhost:4566/static/india-weather/daily-ahmedabad.sample.json |
head -3)
⎿  HTTP/1.1 200 OK
cache-control: no-store, max-age=0
content-length: 5276
⏺ Skill(playwright-cli)
⎿  Successfully loaded skill · 1 tool allowed
⏺ Bash(playwright-cli open "http://localhost:4566/india-weather.html?local" 2>&1
| tail -5)
⎿  ### Page
- Page URL: http://localhost:4566/india-weather.html?local
- Page Title: Aayush Garg - India Weather
… +2 lines (ctrl+o to expand)
⏺ Bash(sleep 2 && playwright-cli screenshot --filename=/tmp/iw-24h.png 2>&1 |
tail -3)
⎿   type: 'png'
});
```
Read 1 file (ctrl+o to expand)
⏺ Bash(playwright-cli eval "() => window.scrollTo(0, 900)" 2>&1 | tail -2 &&
sleep 1 && playwright-cli screenshot --filename=/tmp/iw-24h-charts.png
2>&1 | tail -1)
⎿  await page.evaluate('() => window.scrollTo(0, 900)');
```
```
Read 1 file (ctrl+o to expand)
⏺ Bash(playwright-cli eval "() =>
document.querySelector('[data-range=\"7d\"]').click()" 2>&1 | tail -2 &&
sleep 2 && playwright-cli screenshot --filename=/tmp/iw-7d.p…)
⎿  await page.evaluate('() => document.querySelector(\'[data-range="7d"]\
').click()');
```
```
Read 1 file (ctrl+o to expand)
⏺ The 7d view works but the x-axis is showing 12h ticks. Let me fix to day-level
ticks for 7d/30d.
⏺ Update(static/india-weather/india-weather.js)
⎿  Added 17 lines, removed 1 line
460 return [xs, mins, maxs, means];
461 }
462
463 + // Day-level x-axis formatter for 7d / 30d charts. Forces ti
+cks at IST
464 + // midnight (one per day) and labels them "M/D".
465 + function dayAxisConfig(t) {
466 + return {
467 + stroke: t.text,
468 + grid: { stroke: t.grid, width: 0.5 },
469 + ticks: { stroke: t.grid, width: 0.5 },
470 + space: 60,
471 + incrs: [86400],
472 + values: (u, splits) => splits.map(s => {
473 + const d = new Date(s * 1000);
474 + return (d.getUTCMonth() + 1) + '/' + d.getUTCDate();
475 + }),
476 + };
477 + }
478 +
479 function buildBandOpts(title, color, bandColor, valueFmt, si
ze) {
480 const t = themeColors();
481 return {
...
485 legend: { show: false },
486 scales: { x: { time: true } },
487 axes: [
472 - { stroke: t.text, grid: { stroke: t.grid, width: 0.5 }
-, ticks: { stroke: t.grid, width: 0.5 } },
488 + dayAxisConfig(t),
489 {
490 stroke: t.text,
491 grid: { stroke: t.grid, width: 0.5 },
⏺ Update(static/india-weather/india-weather.js)
⎿  Added 1 line, removed 1 line
545 legend: { show: false },
546 scales: { x: { time: true }, y: { range: (u, lo, hi) =>
[0, Math.max(50, hi)] } },
547 axes: [
548 - { stroke: t.text, grid: { stroke: t.grid, width: 0.5 }
-, ticks: { stroke: t.grid, width: 0.5 } },
548 + dayAxisConfig(t),
549 {
550 stroke: t.text,
551 grid: { stroke: t.grid, width: 0.5 },
⏺ Update(static/india-weather/india-weather.js)
⎿  Added 2 lines, removed 2 lines
602 renderAqiBarChart('iw-chart-aqi', days);
603
604 renderBandChart('temp', 'iw-chart-temp', 'Temp °C',
605 - '#E8A87C', 'rgba(232, 168, 124, 0.22)',
605 + '#E8A87C', 'rgba(232, 168, 124, 0.32)',
606 v => v.toFixed(1) + '°',
607 days, 'temp_min', 'temp_max', 'temp_mean');
608
609 renderBandChart('humidity', 'iw-chart-humidity', 'Humidity
%',
610 - '#7CC4A1', 'rgba(124, 196, 161, 0.22)',
610 + '#7CC4A1', 'rgba(124, 196, 161, 0.32)',
611 v => Math.round(v) + '%',
612 days, 'humidity_min', 'humidity_max', 'humidity_mean');
613 }
⏺ Bash(playwright-cli reload 2>&1 | tail -1 && sleep 2 && playwright-cli eval
"() => { window.scrollTo(0, 900);
document.querySelector('[data-range=\"7d\"]').click();…)
⎿  - [Snapshot](.playwright-cli/page-2026-04-28T19-29-38-343Z.yml)
```
```
Read 1 file (ctrl+o to expand)
⏺ Update(static/india-weather/india-weather.js)
⎿  Added 8 lines, removed 1 line
476 };
477 }
478
479 + // Half-day padding on each side so the leftmost / rightmost
+ daily marker
480 + // (and bar) aren't clipped at the chart edge.
481 + const X_PAD = 12 * 3600;
482 + function paddedXRange() {
483 + return (u, dataMin, dataMax) => [dataMin - X_PAD, dataMax
++ X_PAD];
484 + }
485 +
486 function buildBandOpts(title, color, bandColor, valueFmt, si
ze) {
487 const t = themeColors();
488 return {
...
490 height: size.height,
491 cursor: { drag: { x: false, y: false } },
492 legend: { show: false },
486 - scales: { x: { time: true } },
493 + scales: { x: { time: true, range: paddedXRange() } },
494 axes: [
495 dayAxisConfig(t),
496 {
⏺ Update(static/india-weather/india-weather.js)
⎿  Added 4 lines, removed 1 line
550 height: chartSize(el).height,
551 cursor: { drag: { x: false, y: false } },
552 legend: { show: false },
553 - scales: { x: { time: true }, y: { range: (u, lo, hi) =>
-[0, Math.max(50, hi)] } },
553 + scales: {
554 + x: { time: true, range: paddedXRange() },
555 + y: { range: (u, lo, hi) => [0, Math.max(50, hi)] },
556 + },
557 axes: [
558 dayAxisConfig(t),
559 {
⏺ Bash(playwright-cli reload 2>&1 | tail -1 && sleep 2 && playwright-cli eval
"() => { window.scrollTo(0, 900);
document.querySelector('[data-range=\"7d\"]').click();…)
⎿  - [Snapshot](.playwright-cli/page-2026-04-28T19-30-25-020Z.yml)
```
```
Read 1 file (ctrl+o to expand)
⏺ Bash(playwright-cli eval "() =>
document.querySelector('[data-range=\"30d\"]').click()" 2>&1 | tail -1 &&
sleep 2 && playwright-cli screenshot --filename=/tmp/iw-30d…)
⎿  ```
```
Read 1 file (ctrl+o to expand)
⏺ Bash(playwright-cli eval "() => window.scrollTo(0, 700)" 2>&1 | tail -1 &&
sleep 1 && playwright-cli screenshot --filename=/tmp/iw-30d-v2.png 2>&1 |
tail -1)
⎿  ```
```
Read 1 file (ctrl+o to expand)
⏺ Update(static/india-weather/india-weather.js)
⎿  Added 6 lines, removed 4 lines
460 return [xs, mins, maxs, means];
461 }
462
463 - // Day-level x-axis formatter for 7d / 30d charts. Forces ti
-cks at IST
464 - // midnight (one per day) and labels them "M/D".
463 + // Day-level x-axis formatter for 7d / 30d charts. Lets uPlo
+t pick a
464 + // sensible tick density (1, 2, 5 days...) and labels them "
+M/D".
465 function dayAxisConfig(t) {
466 return {
467 stroke: t.text,
468 grid: { stroke: t.grid, width: 0.5 },
469 ticks: { stroke: t.grid, width: 0.5 },
470 - space: 60,
471 - incrs: [86400],
470 + space: 55,
471 + // Allowed increments in seconds: 1d, 2d, 5d, 7d. uPlot
+picks the
472 + // smallest increment that satisfies `space`.
473 + incrs: [86400, 86400 * 2, 86400 * 5, 86400 * 7],
474 values: (u, splits) => splits.map(s => {
475 const d = new Date(s * 1000);
476 return (d.getUTCMonth() + 1) + '/' + d.getUTCDate();
⏺ Bash(playwright-cli reload 2>&1 | tail -1 && sleep 2 && playwright-cli eval
"() => { window.scrollTo(0, 700);
document.querySelector('[data-range=\"30d\"]').click();…)
⎿  - [Snapshot](.playwright-cli/page-2026-04-28T19-31-39-426Z.yml)
```
```
Read 1 file (ctrl+o to expand)
⏺ Bash(playwright-cli eval "() =>
document.querySelector('[data-range=\"7d\"]').click()" 2>&1 | tail -1 &&
sleep 1 && playwright-cli screenshot --filename=/tmp/iw-7d-f…)
⎿  ```
```
Read 1 file (ctrl+o to expand)
⏺ Bash(playwright-cli eval "() =>
document.querySelector('[data-range=\"24h\"]').click()" 2>&1 | tail -1 &&
sleep 1 && playwright-cli screenshot --filename=/tmp/iw-24h…)
⎿  ```
```
Read 1 file (ctrl+o to expand)
⏺ 24h still works. All three views verified. Closing browser and finalizing.
⏺ Bash(playwright-cli close 2>&1 | tail -1)
⎿  (No output)
⏺ Update(CLAUDE.md)
⎿  Added 4 lines, removed 1 line
14 ## CI/CD
15 - Pushes to `master` trigger `.github/workflows/quarto-publish.
yml`
16 - Workflow runs `quarto render`, then a `sed` step substitutes
any `__MAPBOX_TOKEN__` placeholder in `_site/` from the `MAPBOX
_TOKEN` repo secret, then publishes `_site/` to `gh-pages` via
`quarto-dev/quarto-actions/publish@v2` with `render: false`
17 -- A separate cron workflow `.github/workflows/india-weather-dat
-a.yml` runs every 15 minutes, fetches Open-Meteo + WAQI, and fo
-rce-pushes a one-commit `weather.json` to an orphan `data` bran
-ch. See "Live Data Pages" below.
17 +- Two cron workflows feed the orphan `data` branch (force-push,
+ single-commit):
18 + - `.github/workflows/india-weather-data.yml` runs every 15 mi
+nutes (Open-Meteo + WAQI live snapshot + 24h trailing window).
19 + - `.github/workflows/india-weather-daily.yml` runs once per d
+ay at 02:00 IST and rewrites 30-day per-city daily aggregates f
+rom Open-Meteo (forecast API + air-quality API).
20 + - Both workflows share the concurrency group `india-weather-d
+ata-publish` and each carries forward the other's files when fo
+rce-pushing, so they cannot race-clobber each other. See "Live
+Data Pages" below.
21
22 ## Architecture
23
⏺ Update(CLAUDE.md)
⎿  Added 16 lines, removed 12 lines
82
83 ### Files (India Weather)
84 - `india-weather.qmd` — top-level Quarto page; embeds the Mapb
ox + uPlot CDNs and the page skeleton via raw HTML
85 -- `static/india-weather/india-weather.js` — client renderer (M
-apbox markers, popups, leaderboard, fitBounds, fixture-fallbac
-k fetch, uPlot history charts)
85 +- `static/india-weather/india-weather.js` — client renderer (M
+apbox markers, popups, leaderboard, fitBounds, fixture-fallbac
+k fetch, uPlot history charts; 24h = line charts, 7d/30d = min
+/max bands + mean line for temp & humidity, US-AQI category ba
+rs for AQI)
86 - `static/india-weather/india-weather.css` — page-specific sty
les, reuses the global CSS variables from `styles.css`
87 -- `static/india-weather/cities.json` — city config (id, name,
-lat, lon, bbox); read by both the fetcher and the client
87 +- `static/india-weather/cities.json` — city config (id, name,
+lat, lon, bbox); read by both fetchers and the client
88 - `static/india-weather/weather.sample.json` — hand-authored f
ixture used as a fallback when the remote data branch is unrea
chable
89 -- `static/india-weather/history-<id>.sample.json` — per-city h
-istory fallbacks for ?local dev / data-branch outages
90 -- `scripts/fetch-india-weather.mjs` — pure-Node ESM fetcher (n
-o deps, uses built-in `fetch` and `AbortController`); also mai
-ntains rolling history files when given `--history-in` / `--hi
-story-out`
91 -- `scripts/bootstrap-india-weather-history.mjs` — one-shot 30-
-day backfill from Open-Meteo + Open-Meteo Air Quality
92 -- `.github/workflows/india-weather-data.yml` — `*/15` cron + `
-workflow_dispatch`
93 -- `.github/workflows/india-weather-bootstrap.yml` — `workflow_
-dispatch`-only one-shot history bootstrap (gated behind a "yes
-" confirm input; re-running overwrites cron-built 15-min ticks
- with hourly archive points)
89 +- `static/india-weather/history-<id>.sample.json` — per-city 2
+4h fallbacks for ?local dev / data-branch outages
90 +- `static/india-weather/daily-<id>.sample.json` — per-city 30-
+day daily-aggregate fallbacks
91 +- `scripts/fetch-india-weather.mjs` — pure-Node ESM fetcher (n
+o deps, uses built-in `fetch` and `AbortController`); writes t
+he live `weather.json` and a 24h-only rolling `history-<id>.js
+on` per city when given `--history-in` / `--history-out`
92 +- `scripts/fetch-india-weather-daily.mjs` — pure-Node ESM dail
+y-aggregate fetcher; rewrites the 30-day window from Open-Mete
+o each run (no incremental append, missed runs self-heal)
93 +- `.github/workflows/india-weather-data.yml` — `*/15` cron + `
+workflow_dispatch`; owns `weather.json` and `history-*.json`
94 +- `.github/workflows/india-weather-daily.yml` — `30 20 * * *`
+cron (= 02:00 IST) + `workflow_dispatch`; owns `daily-*.json`
95
96 ### Architecture
96 -- The cron checks out `master`, runs the fetcher (which calls
-Open-Meteo for weather and WAQI for AQI), then publishes the r
-esulting `weather.json` as a single-commit force-push to an or
-phan `data` branch.
97 -- The cron also reads the existing `history-<id>.json` files f
-rom the `data` branch, appends the latest 15-min tick to `poin
-ts_24h`, extends `points_7d` (hourly) and `points_30d` (6-hour
-ly) when enough wall-clock time has elapsed, and force-pushes
-the updated set in the same commit.
98 -- The published page reads `weather.json` from `https://raw.gi
-thubusercontent.com/garg-aayush/garg-aayush.github.io/data/wea
-ther.json`. If that fetch fails (404, offline), the JS falls b
-ack to the bundled `weather.sample.json` so the page never sho
-ws a broken state. Per-city `history-<id>.json` files are load
-ed the same way (lazy, on city selection).
97 +- The 15-min cron checks out `master`, runs the fetcher (which
+ calls Open-Meteo for weather and WAQI for AQI), updates the r
+olling 24h history, then publishes the resulting `weather.json
+` + `history-*.json` as a single-commit force-push to the orph
+an `data` branch — preserving the daily cron's `daily-*.json`
+files when it does so.
98 +- The daily cron checks out `master`, runs the daily-aggregate
+ fetcher (Open-Meteo Forecast API + Air Quality API with `past
+_days=30`, `timezone=Asia/Kolkata`), aggregates hourly data in
+to per-IST-day min/max/mean for temp, humidity, and US AQI, an
+d force-pushes the resulting `daily-*.json` files alongside th
+e preserved `weather.json` + `history-*.json`.
99 +- Both workflows share concurrency group `india-weather-data-p
+ublish` so they serialize and never race-clobber the orphan fo
+rce-push.
100 +- The published page reads `weather.json`, `history-<id>.json`
+, and `daily-<id>.json` from `https://raw.githubusercontent.co
+m/garg-aayush/garg-aayush.github.io/data/`. If a fetch fails,
+the JS falls back to the bundled `*.sample.json` files. Per-ci
+ty history files are loaded lazily on city/range selection.
101 - Visitor count never affects API call volume because all fetc
hing happens server-side on the cron schedule.
102
103 ### History data model
102 -- Each `history-<id>.json` holds three pre-downsampled views:
-`points_24h` (15-min, last 24h), `points_7d` (hourly, last 7d)
-, `points_30d` (6-hourly, last 30d). Point shape: `{ t: ISO-UT
-C, temp: °C, humidity: %, aqi: US-AQI }`.
104 +- `history-<id>.json` holds the 24h trailing window only: `poi
+nts_24h` at 15-min cadence. Point shape: `{ t: ISO-UTC, temp:
+°C, humidity: %, aqi: US-AQI }`.
105 +- `daily-<id>.json` holds the last 30 complete IST days as `da
+ys: [...]`. Each entry: `{ date: "YYYY-MM-DD", temp_min, temp_
+max, temp_mean, humidity_min, humidity_max, humidity_mean, aqi
+_min, aqi_max, aqi_mean }`. The 7d view slices the last 7 days
+; 30d uses all 30. The in-progress IST day is excluded.
106 - The chart's AQI series uses Open-Meteo Air Quality (US AQI s
cale) because WAQI's historical endpoint is paywalled even wit
h a token. The live tile / leaderboard still shows WAQI's CPCB
-station reading. The two AQI numbers are on different scales
and will not match exactly; this is documented inline on the p
age.
104 -- Bootstrap is a one-time-after-merge step: trigger `India Wea
-ther History Bootstrap` from the Actions tab with input `confi
-rm: yes`. It backfills 30 days of hourly weather + US AQI from
- Open-Meteo into the `data` branch alongside `weather.json`. R
-e-running it discards any 15-min cadence ticks that the cron h
-as accumulated since.
107 +- 7d / 30d AQI bars are colored by the day's mean US AQI on th
+e standard EPA category scale (Good / Moderate / USG / Unhealt
+hy / Very Unhealthy / Hazardous). Temp and humidity for those
+views render as a min/max band with a daily-mean line on top.
108 +- No bootstrap workflow is required: each daily cron run rebui
+lds the entire 30-day window from Open-Meteo, so missed runs s
+elf-heal automatically.
109
110 ### Token handling
111 - **No tokens in source, ever.** Both `MAPBOX_TOKEN` and `WAQI
_TOKEN` live as GitHub repo Secrets.
⏺ Bash(git status && echo "---" && git diff --stat)
⎿  * india-weather-daily-aggregates
+ Staged: 2 files
.github/workflows/india-weather-bootstrap.yml
… +25 lines (ctrl+o to expand)
⏺ Bash(pkill -f "quarto preview" 2>/dev/null; sleep 1; echo "preview stopped")
⎿  preview stopped
⏺ Bash(git add .github/workflows/india-weather-daily.yml
.github/workflows/india-weather-data.yml CLAUDE.md
scripts/fetch-india-weather.mjs scripts/fetch-india-weather…)
⎿  ok 24 files changed, 696 insertions(+), 465 deletions(-)
* india-weather-daily-aggregates
+ Staged: 24 files
… +19 lines (ctrl+o to expand)
⏺ Background command "Start Quarto preview on port 4566" failed with exit code 144
⏺ Bash(git commit -m "$(cat <<'EOF'
Replace 7d/30d history with daily aggregates and AQI category bars…)
⎿  ok india-w
⏺ Bash(git log --oneline -1 && echo "---" && git push -u origin
india-weather-daily-aggregates 2>&1 | tail -10)
⎿  5b63c39 Replace 7d/30d history with daily aggregates and AQI category
bars
---
ok india-weather-daily-aggregates
⏺ Bash(gh pr create --title "Replace 7d/30d history with daily aggregates and
AQI category bars" --body "$(cat <<'EOF'
## Summary…)
⎿  ok created #59 https://github.com/garg-aayush/garg-aayush.github.io/pu
ll/59
⏺ PR #59 is up: https://github.com/garg-aayush/garg-aayush.github.io/pull/59
What shipped:
- 7d/30d temperature & humidity now use min/max bands with a daily-mean line.
- 7d/30d AQI shows color-coded US-AQI category bars (Good / Moderate / USG /
Unhealthy / Very Unhealthy / Hazardous), height = daily mean.
- 24h view unchanged.
- New daily cron at 02:00 IST rebuilds the full 30-day window from Open-Meteo
every run — missed runs self-heal, no separate bootstrap workflow needed.
- Old bootstrap workflow + script deleted; 15-min cron simplified to 24h-only
history.
- Both crons share concurrency group + carry forward each other's files when
force-pushing the orphan data branch, so they can't race-clobber.
One action needed after merge: trigger India Weather Daily Aggregates once
from the Actions tab (workflow_dispatch) to seed daily-*.json on the data
branch. Otherwise the first scheduled run could be up to 24h away and the page
would fall back to bundled samples until then.
✻ Worked for 16m 53s
❯ Please merge the PR to master and ensure local branches are aligned with
remote.
⏺ Bash(gh pr checks 59 2>&1 | head -10)
⎿  no checks reported on the 'india-weather-daily-aggregates' branch
⏺ Bash(gh pr merge 59 --squash --delete-branch 2>&1 | tail -10)
⎿   delete mode 100644 scripts/bootstrap-india-weather-history.mjs
create mode 100644 scripts/fetch-india-weather-daily.mjs
create mode 100644 static/india-weather/daily-ahmedabad.sample.json
… +7 lines (ctrl+o to expand)
⏺ Bash(git checkout master && git pull --ff-only origin master && git branch -d
india-weather-daily-aggregates 2>&1 && echo "---" && git status && git log
--oneline -3)
⎿  Error: Exit code 1
Already on 'master'
Your branch is up to date with 'origin/master'.
ok (up-to-date)
FAILED: git branch -d india-weather-daily-aggregates
error: branch 'india-weather-daily-aggregates' not found
⏺ Bash(git fetch --prune origin && git log --oneline -3 && echo "---" && git
branch -a)
⎿  ok fetched (4 new refs)
75a56ad Replace 7d/30d history with daily aggregates and AQI category
bars (#59)
… +20 lines (ctrl+o to expand)
⏺ Merged and synced. Local master is at 75a56ad (the squashed PR), the feature
branch is gone, and origin/india-weather-daily-aggregates was pruned. Don't
forget to manually trigger the India Weather Daily Aggregates workflow once
from the Actions tab to seed daily-*.json on the data branch.
✻ Sautéed for 40s
❯ I want you to update @CLAUDE.md with the following development rules:
1. Whenever we are making changes to the codebase of a personal portfolio
website (adding a new feature or updating it), it should always be done in a
separate branch with an appropriate name and then merged.
2. After making all the changes, we raise the PR and merge it to the master.
3. We make sure we make appropriate commits at regular intervals, and then we
merge it as a squash merge if it's a small change, but if it's multiple
commits or a lot of different changes, we do not squash merge then.
⎿  Read CLAUDE.md (121 lines)
⏺ Update(CLAUDE.md)
⎿  Added 10 lines, removed 1 line
48 - PR body should have a `## Summary` with bullet points and the
Claude Code footer
49
50 ## Branching
51 -- **Never commit directly to `master`** -- always use a feature
- branch, create a PR, and merge
51 +- **Never commit directly to `master`** -- every change to the
+codebase (new feature, update, fix, refactor, content) goes on
+a separate branch with a descriptive name, then is merged via P
+R
52 - Blog posts use the `blog-posts` branch (see `.claude/rules/bl
og-workflow.md`)
53 - Tools use the `tools` branch (see `.claude/rules/tools-workfl
ow.md`)
54 - Other site updates (about page, homepage, config, styles) use
descriptive feature branches (e.g., `update-about-intro`)
55 +- Commit at regular intervals as logical units of work complete
+ -- don't bundle the entire change into one giant commit at the
+ end
56 - After merging a PR, switch back to `master` and pull
57 - **Comparing approaches**: When evaluating multiple design opt
ions (e.g., table vs card layout), implement each in a parallel
worktree branch, preview all simultaneously on different ports
, then ship the chosen one and discard the rest
58
59 +## Pull Requests
60 +- Do **not** include a "Test plan" section in PR descriptions u
+nless explicitly asked
61 +- PR body should have a `## Summary` with bullet points and the
+ Claude Code footer
62 +- After all changes are committed and pushed, raise a PR and me
+rge it to `master`
63 +- **Merge strategy**:
64 + - **Squash merge** (`gh pr merge --squash`) when the change i
+s small / single-purpose -- a typo fix, a one-file tweak, or a
+few commits that all describe the same logical change
65 + - **Regular merge** (preserve commit history) when the PR con
+tains multiple distinct logical changes or a long, meaningful c
+ommit history that future readers should be able to navigate. S
+quashing in that case destroys useful structure.
66 +
67 ## Conventions
68 - Blog post dates use `YYYY-MM-DD` prefix format
69 - **Always create new blog posts** using the directory format:
`posts/YYYY-MM-DD-title/index.qmd` (not single `.qmd` files)
Searched for 1 pattern (ctrl+o to expand)
⏺ Update(CLAUDE.md)
⎿  Removed 4 lines
43 ### Theme
44 Custom dark theme inspired by Lil'Log. Key colors: background `
#1d1e20`, accent `#75A8D9` (cyan). Theme is layered as `[cosmo,
theme-dark.scss]` with `styles.css` on top.
45
46 -## Pull Requests
47 -- Do **not** include a "Test plan" section in PR descriptions u
-nless explicitly asked
48 -- PR body should have a `## Summary` with bullet points and the
- Claude Code footer
49 -
46 ## Branching
47 - **Never commit directly to `master`** -- every change to the
codebase (new feature, update, fix, refactor, content) goes on
a separate branch with a descriptive name, then is merged via P
R
48 - Blog posts use the `blog-posts` branch (see `.claude/rules/bl
og-workflow.md`)
⏺ Update(CLAUDE.md)
⎿  Added 1 line, removed 1 line
53 - **Comparing approaches**: When evaluating multiple design opt
ions (e.g., table vs card layout), implement each in a parallel
worktree branch, preview all simultaneously on different ports
, then ship the chosen one and discard the rest
54
55 ## Pull Requests
56 +- After all changes are committed and pushed, raise a PR and me
+rge it to `master`
57 - Do **not** include a "Test plan" section in PR descriptions u
nless explicitly asked
58 - PR body should have a `## Summary` with bullet points and the
Claude Code footer
58 -- After all changes are committed and pushed, raise a PR and me
-rge it to `master`
59 - **Merge strategy**:
60 - **Squash merge** (`gh pr merge --squash`) when the change i
s small / single-purpose -- a typo fix, a one-file tweak, or a
few commits that all describe the same logical change
61 - **Regular merge** (preserve commit history) when the PR con
tains multiple distinct logical changes or a long, meaningful c
ommit history that future readers should be able to navigate. S
quashing in that case destroys useful structure.
Searched for 1 pattern (ctrl+o to expand)
⏺ Structure looks clean. Per the rules I just added, this change should also go
through a feature branch and PR.
⏺ Bash(git checkout -b update-claude-md-dev-rules && git add CLAUDE.md && git
status)
⎿  Switched to a new branch 'update-claude-md-dev-rules'
ok 1 file changed, 10 insertions(+), 5 deletions(-)
* update-claude-md-dev-rules
… +8 lines (ctrl+o to expand)
⏺ Bash(git commit -m "$(cat <<'EOF'
Document branching, commit cadence, and merge-strategy rules…)
⎿  ok update-
⏺ Bash(git push -u origin update-claude-md-dev-rules 2>&1 | tail -3 && gh pr
create --title "Document branching, commit cadence, and merge-strategy
rules" --body "$(ca…)
⎿  ok update-claude-md-dev-rules
ok created #60 https://github.com/garg-aayush/garg-aayush.github.io/pu
ll/60
⏺ Bash(gh pr merge 60 --squash --delete-branch 2>&1 | tail -3 && git checkout
master && git pull --ff-only origin master 2>&1 | tail -3 && git fetch
--prune origin 2>&…)
⎿  Fast-forward
CLAUDE.md | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
… +8 lines (ctrl+o to expand)
⏺ Done. PR #60 merged via squash (small, single-purpose change — fits its own
rule) and local master is at 9cd8c9a. Net change to CLAUDE.md:
- Branching section: added explicit "every codebase change goes on a feature
branch with a descriptive name" rule, plus commit-at-regular-intervals
guidance.
- Pull Requests section: added the merge-strategy decision (squash for
small/single-purpose, regular merge to preserve history for multi-purpose PRs)
and folded the existing PR rules in.
✻ Brewed for 1m 33s
❯ /exit
⎿ See ya!
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