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

  PM2.5 PM10 O3 AQI classification       
Current 24 17 63.8 63.8 Moderate Air Quality  
    
Forecastmin avg maxmin avg maxmin avg max           
10-05-202562138361238Good Air Quality
     
11-05-20256162826928Good Air Quality
     
12-05-20252342607152460Moderate Air Quality 
    
13-05-20251735545101954Moderate Air Quality 
    
14-05-20253853639151863Moderate Air Quality 
    
15-05-202553607417192474Moderate Air Quality 
    
16-05-202533415711142657Moderate Air Quality 
    
17-05-202561847271847Good 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 warnings of emergency conditions. The entire population is more likely to be affected
Hazardous Air Quality > 300 Health alert: everyone may experience more serious health effects
 More information:  EPA Air Quality Index      Sensor data captured at: 12-05-2025 15:00