Haze Watch
A single-page haze and weather monitor.
- Singapore tab: NEA 24-hour PSI by region (north, south, east, west, central) on a map of Singapore's 28 postal districts, with PM2.5, PM10 and main pollutant, plus Open-Meteo weather and a four-day outlook.
- ASEAN cities tab: Open-Meteo weather for 12 cities (the 11 ASEAN capitals and Pekanbaru).
Data
| What | Source | Coverage |
|---|
| PSI, PM2.5, PM10 | National Environment Agency via data.gov.sg real-time PSI API | Singapore only |
| Weather | Open-Meteo forecast API | All cities |
The values in index.html are a snapshot taken 28 Oct 2026, 10:15 SGT. The page does not refresh itself. Postal-district shapes are an approximate drawing, each shaded by the NEA region it falls in.
Deploy on Vercel
It is a static site with no build step.
- Import this repository in Vercel.
- Framework preset: Other. Leave build command and output directory empty.
- Deploy.
vercel.json only adds clean URLs and a few security headers.
To preview locally, open index.html in a browser.
Making the data live
Browsers can call both APIs directly. To refresh on load, fetch these and replace the embedded NEA and CITIES objects in the script:
https://api-open.data.gov.sg/v2/real-time/api/psihttps://api.open-meteo.com/v1/forecast with current and daily parameters (see the CITIES structure for the fields used)
