AIRNow Home >> Arizona >> Grand Canyon National Park
 
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AQI Animation - http://www.epa.gov/airnow/2012/20121122/anim_aqi_co_ut_az_nm.gif
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
Peak AQI - http://www.epa.gov/airnow/2012/20121122/peak_aqi_co_ut_az_nm.jpg
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
Peak Ozone (8-hour) - http://www.epa.gov/airnow/2012/20121122/peak_o3_co_ut_az_nm.jpg
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
Peak Particles PM<sub>2.5</sub> (24-hour) - http://www.epa.gov/airnow/2012/20121122/peak_pm25_co_ut_az_nm.jpg
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
 
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
 
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National Park Service
 
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American Lung Association (ALA) of Arizona
Blue Sky Target Days (Visibility)
Clean Air Make More
Daily Peaks
Thursday, November 22, 2012
Particles PM2.5 Not Available
Ozone
41 
 Good
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Note: peak data are available beginning August 1, 2010.

Other Information
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