Montana
 

AQI Forecast - http://files.airnowtech.org/airnow/today/forecast_aqi_20160211_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://files.airnowtech.org/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://files.airnowtech.org/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
 
State Air Quality Resources
Air Quality Monitoring In Yellowstone County, Montana
American Lung Association (ALA) of the Mountain Pacific
Montana DEQ - Air Quality Information
Montana DEQ - Air Quality Monitoring
Montana DEQ - Contacts
Montana DEQ - Planning Prevention and Assistance (PPA) Division
Montana Department of Environmental Quality (DEQ)
Click on the city name for more detailed information.

printable summary
FORECAST CURRENT
AQI
Thu
Feb 11
Fri
Feb 12
Billings
aqi not available
aqi not available
28 
Birney
aqi not available
aqi not available
32 
Bozeman
aqi not available
aqi not available
28 
Broadus
aqi not available
aqi not available
59 
Butte
aqi not available
aqi not available
62 
Flathead Valley
aqi not available
aqi not available
58 
Great Falls
aqi not available
aqi not available
35 
Hamilton
aqi not available
aqi not available
20 
Helena
aqi not available
aqi not available
32 
Lewistown
aqi not available
aqi not available
Libby
aqi not available
aqi not available
71 
Malta
aqi not available
aqi not available
38 
Missoula
aqi not available
aqi not available
52 
Seeley Lake
aqi not available
aqi not available
62 
Sidney
aqi not available
aqi not available
47 
Thompson Falls
aqi not available
aqi not available
44 
Yellowstone National Park
aqi not available
aqi not available
 
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.