Metropolitan Washington
 
  • AQI Loop
  • AQI
  • Ozone AQI
  • PM2.5 AQI
AQI Animation - http://www.epa.gov/airnow/2013/20131209/anim_aqi_washington_dc.gif
Peak AQI - http://www.epa.gov/airnow/2013/20131209/peak_aqi_washington_dc.jpg
Peak Ozone (8-hour) - http://www.epa.gov/airnow/2013/20131209/peak_o3_washington_dc.jpg
Peak Particles PM<sub>2.5</sub> (24-hour) - http://www.epa.gov/airnow/2013/20131209/peak_pm25_washington_dc.jpg
 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
Local Air Quality Resources
Action Day Programs | Forecast
 
State Air Quality Resources
Antelope Valley Air Quality Management District
Bay Area Air Quality Management District
California Air Resources Board
Imperial County Air Pollution Control District
Mendocino County Air Quality Management District
Mojave Desert Air Quality Management District
Monterey Bay Unified Air Pollution Control District
Placer County Air Pollution Control District
Sacramento Metropolitan Air Quality Management District
San Diego County Air Pollution Control District
San Joaquin Valley Air Pollution Control District
San Luis Obispo County Air Pollution Control District
Santa Barbara County Air Pollution Control District
South Coast Air Quality Management District
Ventura County Air Pollution Control District
Yolo-Solano Air Quality Management District
Daily AQI
Monday, December 09, 2013
Particles PM2.5
45 
Good
Particles PM10
Good
Ozone
14 
Good
select another date to see data and maps:
Note: data are available beginning August 1, 2010.

Other Information
Current Conditions and Forecasts
Air Quality Maps Archives (by region)