X  Close Official AQ sensor station - Madison East, Wisconsin, USA

  PM2.5 PM10 O3 AQI classification       
Current 20 7 15.9 20 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
06-22-2026132746471146Good Air Quality
     
06-23-202616253357833Good Air Quality
     
06-24-2026173041581041Good Air Quality
     
06-25-202616213046830Good Air Quality
     
06-26-2026202538571038Good Air Quality
     
06-27-2026112538471038Good Air Quality
     
06-28-2026263564791964Moderate Air Quality 
    
            

classification AQI The health effects should be based on 24 hours average values only.
Good Air Quality 0-50 Air quality is considered satisfactory, and air pollution poses little or no risk
Moderate Air Quality 50-100 Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Unhealthy for some 100-150 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy Air Quality 150-200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy 200-300 Health alert: everyone may experience more serious health effects
Hazardous Air Quality > 300 Health warnings of emergency conditions. The entire population is more likely to be affected
 More information:  EPA Air Quality Index      Sensor data captured at: 06-24-2026 03:00