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

  PM2.5 PM10 O3 AQI classification       
Current 18 9 22.4 22.4 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
14-08-2026132540471140Good Air Quality
     
15-08-20261147723132272Moderate Air Quality 
    
16-08-2026203368582068Moderate Air Quality 
    
17-08-202615233446934Good Air Quality
     
18-08-2026163043471043Good Air Quality
     
19-08-202614253447934Good Air Quality
     
20-08-20263452629152062Moderate Air Quality 
    
21-08-202655677516212575Moderate 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: 16-08-2026 21:00