X  Close Official AQ sensor station - Lewiston, Maine, USA

  PM2.5 PM10 O3 AQI classification       
Current 55 68 68 Moderate Air Quality  
    
Forecastmin avg maxmin avg maxmin avg max           
18-02-202611131534415Good Air Quality
     
19-02-202610223136931Good Air Quality
     
20-02-2026734682102168Moderate Air Quality 
    
21-02-2026251012310Good Air Quality
     
22-02-2026591423514Good Air Quality
     
23-02-2026351222412Good Air Quality
     
24-02-2026581223312Good Air Quality
     
25-02-20268162035620Good 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: 20-02-2026 15:00