Display, monitor and track air quality / pollution measurements from measurements stations from luftkvalitet.info in Norway.Features:- Automatically update measurements for selected station.- Automatically switch to closest station when your location changes.- View list of all cities and explore stations- View stations and measurements on Google Maps- Get notification when measurements reach chosen air quality thresholds- Optionally, run in background (to update station data and / or closest station based on your location).- Notification fixes- Minimum Android version 4.4 (KitKat)- Minor fixes and enhancements