Metropolitan Washington
 
Data courtesy of:
 

 
AQI: Good (0 - 50) AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 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.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
Action DayAction Day
 
Local Air Quality Resources
Action Day Programs | Forecast
 
State Air Quality Resources
American Lung Association (ALA) of the District of Columbia
District Department of the Environment
District Dept. of the Environment - Contacts
Metropolitan Washington Council of Governments - Air Quality Forecast and Index
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
21 
Good
Health Message: None
Air Quality Index (AQI)
21 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
21 
Good
Particles (PM2.5)
21 
Good

Current Conditions
Air Quality Index (AQI)
observed at 16:00 EDT
25
Good
Health Message: None
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.
AQI - Pollutant Details
Ozone 24 Good
Particles (PM2.5) 25 Good

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

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