X  Close Official AQ sensor station - Rockville, Maryland, USA

  PM2.5 PM10 O3 AQI classification       
Current 13 21.6 21.6 Good Air Quality

Forecastmin avg maxmin avg maxmin avg max           
05-19-202421417171223282171Moderate Air Quality 
05-20-2024365276111525282576Moderate Air Quality 
05-21-2024324662913192112962Moderate Air Quality 
05-22-202493660310184123160Moderate Air Quality 
05-23-202421405861117482158Moderate Air Quality 
05-24-2024131826457281826Good Air Quality
05-25-20241828555814171855Moderate 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: 05-21-2024 9:00 am