PM25.in
Air quality of China
- Authentication
- API Key
- HTTPS
- No
- CORS
- Unknown
- Category
- Environment
- Documentation / URL
- http://www.pm25.in/api_doc
Overview
PM25.in provided Chinese air quality — key-based.
⚠️ Status (verified 2026-08): the API returned HTTP 410 Gone — the service appears to be shut down. Verify from your network before relying on it.
What it used to provide
curl "http://www.pm25.in/api/querys/station_names.json?token=YOUR_TOKEN"Alternatives
- Other air-quality APIs (see the site directory).
FAQ
Is PM25.in free? It was free with a token.
Why 410? The service returned Gone (verified) — treat as shut down.
What did it return? Chinese air quality.
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