Air quality in Norway
European Air Quality Index for the largest cities in Norway.
About the air quality index
European Air Quality Index (EAQI)
EAQI from the European Environment Agency is based on four pollutants: particulate matter PM2.5 and PM10, nitrogen dioxide (NO₂) and ozone (O₃). The scale runs from 0 (good) to 100+ (very poor). Values <20 are good, 20-40 fair, 40-60 moderate, 60-80 poor, 80-100 very poor. Official Norwegian measuring stations: NILU (luftkvalitet.no).