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

  PM2.5 PM10 O3 AQI classification       
Current 11 7 11.7 11.7 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
09-21-20268101133311Good Air Quality
     
09-22-2026491523415Good Air Quality
     
09-23-202612243447934Good Air Quality
     
09-24-20263143549121554Moderate Air Quality 
    
09-25-202643505711141757Moderate Air Quality 
    
09-26-202641475710131757Moderate Air Quality 
    
09-27-202645606513182065Moderate 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: 09-23-2026 02:00