Openweathermap · Research

OpenWeather / Hourly air pollution history (from Nov 2020)

Hourly air quality index and pollutant concentrations for a point between two Unix times, from 27 November 2020. Runs on your own OpenWeather API key (Connections, Add key, OpenWeather; keys are on home.openweathermap.org/api_keys). looot charges $0; OpenWeather counts the call on your plan (free plan 60 calls a minute, 1,000,000 a month). Data CC BY-SA 4.0 and ODbL: credit OpenWeather when you show it.

Live data

You are looking at the live public catalog.

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Published API evidence

Public metadata only. Response bodies, credentials, and internal review notes are never displayed.

No verification date is claimed. No response capture is claimed.

Request parameters

end query · required
End, Unix time in seconds (UTC).
lat query · required
Latitude, e.g. 51.51.
lon query · required
Longitude, e.g. -0.13.
start query · required
Start, Unix time in seconds (UTC), e.g. 1735689600.

No allowlisted official documentation or pricing reference is available.