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AQI Animation - http://www.epa.gov/airnow/2012/20121113/anim_aqi_portland_or.gif
Peak AQI - http://www.epa.gov/airnow/2012/20121113/peak_aqi_portland_or.jpg
Peak Ozone (8-hour) - http://www.epa.gov/airnow/2012/20121113/peak_o3_portland_or.jpg
Peak Particles PM<sub>2.5</sub> (24-hour) - http://www.epa.gov/airnow/2012/20121113/peak_pm25_portland_or.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 Program
 
State Air Quality Resources
American Lung Association (ALA) of Oregon
Oregon Asthma Program
Oregon DEQ - Air Quality - Contact Us
Oregon DEQ - Air Quality Program
Oregon DEQ - Oregon Air Quality Index
Oregon Department of Environmental Quality (DEQ)
Daily Peaks
Tuesday, November 13, 2012
Particles PM2.5
54 
 Moderate
Particles PM10 Not Available
Ozone
3 
 Good
select another date to see peak data and maps:
Note: peak data are available beginning August 1, 2010.

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