Major cities and states of the world are listed in the following table. You can click on the link in the 3rd or 4th column of the following tables to download air quality historical data for the last 365 days (1 year) for each city or state. The history data includes PM10, PM2.5, carbon monoxide, nitrogen dioxide, sulfur dioxide, and aerosol optical depth for every hour. The historical data is updated automatically between 07:30 UTC – 08:20 UTC every day. We use AWS serverless web services and open-source weather API to get these data.

(These air quality data are non-commercial. Anyone can use these data for studies, reachers and, projects.)