Air quality maps are a convenient way to know your local and global air quality. Here are the 5 features of the best air quality maps.
Airwyn is a free app that allows you to monitor your PurpleAir sensor and supports AQI conversion formulas from US EPA, LRAPA, and AQandU. It will also send you alerts whenever the air quality improves or worsens. If you do not own a PurpleAir sensor, don't worry! Airwyn can also track and receive alerts from a close-by PurpleAir or AirNow sensor.