Air Quality Monitoring


Minnesota Air Quality Index – Minnesota Pollution Control Agency

The Air Quality Index (AQI) reports daily air quality conditions. In Minnesota, four pollutants are used to calculate the AQI: ground-level ozone, sulfur dioxide, carbon monoxide and fine particles (PM2.5). Not all pollutants are monitored at each location. The pollutant with the highest value determines the AQI for that hour.


Minnesota Environmental Data Access – Minnesota Pollution Control Agency

Through this web page you can find and download data from water and air quality monitoring sites located in Minnesota. Where available, you can also view the conditions of lakes, rivers or streams that have been assessed.