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A new 'Show HN' post introduces SF Microclimates, a free API providing hyperlocal weather data for 50 San Francisco neighborhoods, designed to overcome the limitations of generic city-wide weather reports.
AI 生成摘要
一篇新的「Show HN」貼文介紹了 SF Microclimates，這是一個免費的 API，為舊金山 50 個社區提供超本地化天氣數據，旨在克服全市通用天氣預報的局限性。
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Free hyperlocal weather API for 50 San Francisco neighborhoods. No API key required. Claude Code and Clawdbot Skills
Real weather for 50 San Francisco neighborhoods. Free API. No key required.
🌐 Live API: microclimates.solofounders.com
Example website: view weather in all regions of San Francisco
Use with Claude Code, Clawdbot, or build into your apps.
Built by Solo Founders.
SF has the most dramatic microclimates of any US city.
Weather apps say "San Francisco: 58°F" — but that's useless. It can be 52°F and foggy in the Outer Sunset while it's 65°F and sunny in the Mission, just 3 miles apart.
This API aggregates 150+ outdoor sensors and groups them by neighborhood, so you get actual local temperatures — not some airport reading from SFO.
No API key. No signup. Just use it.
Copy and paste this into your skills folder:
From Marina to Noe Valley, Presidio to Twin Peaks — every SF neighborhood mapped.
Includes: mission, castro, marina, soma, haight, noe_valley, outer_sunset, inner_richmond, north_beach, pacific_heights, potrero, dogpatch, bayview, twin_peaks, presidio, tenderloin, chinatown, japantown, cole_valley, glen_park, and 30 more.
Each response includes real-time air quality data from PurpleAir sensors.
AQI is calculated from PM2.5 using the US EPA formula:
This gives you accurate, hyperlocal air quality — not a city-wide average from a distant monitoring station.
Want to run your own instance?
This API uses PurpleAir sensors. Sign up at develop.purpleair.com — free for personal use.
Add the output to wrangler.toml:
LA, Seattle, NYC, Chicago, Austin — every city has microclimates.
The neighborhood bounding boxes are in src/index.ts. To adapt:
PRs welcome! We'd love to see la-microclimates, nyc-microclimates, etc.
MIT — use it however you want.
Free hyperlocal weather API for 50 San Francisco neighborhoods. No API key required. Claude Code and Clawdbot Skills
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