Yellowstone National Park
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20140919_mt_id_wy.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.
 - http://www.epa.gov/airnow/today/cur_aqi_mt_id_wy.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 Animation - http://www.epa.gov/airnow/today/anim_aqi_mt_id_wy.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.
 
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
National Park Service
 
State Air Quality Resources
American Lung Association (ALA) of Idaho
Community Planning Association (Compass) web page - Air Quality Resources for Southwest Idaho and the Treasure Valley.
Idaho Department of Environmental Quality
Montana/Idaho Airshed Group - with a list of planned prescribed fires
Air Quality Forecast
Today's High Tomorrow's High
Data Not Available Data Not Available
AQI - Pollutant Details
Data Not Available Data Not Available

Current Conditions
Air Quality Index (AQI)
observed at 9:00 MDT
18
Good
Health Message: None
AQI - Pollutant Details
Ozone 18 Good

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