X  Close Official AQ sensor station - Horicon, Wisconsin, USA

  PM2.5 PM10 O3 AQI classification       
Current 28 17 41.3 41.3 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
05-28-20268101333413Good Air Quality
     
05-29-202671834351034Good Air Quality
     
05-30-202671564351964Moderate Air Quality 
    
05-31-202611151846718Good Air Quality
     
06-01-202610132345723Good Air Quality
     
06-02-20268121645616Good Air Quality
     
06-03-2026152444581344Good 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: 05-30-2026 1:00 am