United States
 
  • AQI Loop
  • AQI
  • Ozone AQI
  • PM AQI
AQI Animation - http://www.epa.gov/airnow/2013/20130728/anim_aqi_usa.gif
Peak AQI - http://www.epa.gov/airnow/2013/20130728/peak_aqi_usa.jpg
Peak Ozone (8-hour) - http://www.epa.gov/airnow/2013/20130728/peak_o3_usa.jpg
Peak Particles PM<sub>2.5</sub> (24-hour) - http://www.epa.gov/airnow/2013/20130728/peak_pm25_usa.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
Air Quality Maps Archives
July 28, 2013
Disclaimer: maps are not validated.

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Current Conditions and Forecasts Summary
AirCompare
 

Maps (1/1/2009 - 10/11/2009) | About the Data | For research and decision-making exercises | For feeds of AIRNOW data