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

  PM2.5 PM10 O3 AQI classification       
Current 63 23 29 63 Moderate Air Quality  
    
Forecastmin avg maxmin avg maxmin avg max           
08-03-2026162852581452Moderate Air Quality 
    
08-04-20263544489111248Good Air Quality
     
08-05-20263356679152167Moderate Air Quality 
    
08-06-202647535911151959Moderate Air Quality 
    
08-07-202646718513253485Moderate Air Quality 
    
08-08-2026183275592775Moderate Air Quality 
    
08-09-2026212956681856Moderate Air Quality 
    
08-10-20262949797132979Moderate 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: 08-05-2026 5:00 pm