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

  PM2.5 PM10 O3 AQI classification       
Current 38 17 27.2 38 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
02-28-2026371134611Good Air Quality
     
03-01-202661222471022Good Air Quality
     
03-02-20261328446111544Good Air Quality
     
03-03-202634486013182460Moderate Air Quality 
    
03-04-202630577411222874Moderate Air Quality 
    
03-05-202663739019263690Moderate Air Quality 
    
03-06-20262765867233386Moderate Air Quality 
    
03-07-20262852617151861Moderate 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: 03-02-2026 10:00 pm