https://airqo.net/products/api
AirQo API | Open Air Quality Data Access for Developers - Free Tier Available | AirQo
Integrate AirQo's comprehensive air quality data into your applications. Access real-time and historical PM2.5, PM10, NO2 data from 200+ monitors across 16+...
free tier availableopen airquality datafor developersairqo
https://developers.google.com/maps/documentation/air-quality/reference/rest/v1/Pollutant?authuser=1&hl=fa
Pollutant | Air Quality API | Google for Developers
air quality apigoogle for developerspollutant