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

  PM2.5 PM10 O3 AQI classification       
Current 9 4 29.7 29.7 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
04-29-202612141545515Good Air Quality
     
04-30-202681830471030Good Air Quality
     
05-01-2026592924929Good Air Quality
     
05-02-2026791235612Good Air Quality
     
05-03-2026131925691325Good Air Quality
     
05-04-20261522295101629Good Air Quality
     
05-05-2026371523515Good Air Quality
     
05-06-2026371023410Good 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: 05-01-2026 18:00