X  Close Official AQ sensor station - Howard County Near Road, Maryland, USA

  PM2.5 PM10 O3 AQI classification       
Current 9 9 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
08-15-202653616814192368Moderate Air Quality 
    
08-16-202648617311192573Moderate Air Quality 
    
08-17-2026133751491351Moderate Air Quality 
    
08-18-20262947588131658Moderate Air Quality 
    
08-19-202651607213182572Moderate Air Quality 
    
08-20-202651667913202679Moderate Air Quality 
    
08-21-20263649599131859Moderate 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: 08-17-2026 2:00 am