Environment — entry 012 of 18
PM25.in
Air quality of China
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSNot supportedPlain HTTP only — avoid sending anything sensitive.
CORSUnknownNot documented — test from the browser before relying on it.
GreatAPIs Score
Score15
Authentication15/25API key required
Pricing0/20No pricing model documented
Docs0/20No docs or spec available
Formats0/15No response formats listed
Freshness0/20Never verified
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<a href="https://greatapis.com/api/pm25-in/"><img src="https://greatapis.com/badge/pm25-in.svg" alt="Scored 15 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.