Montana
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20170423_mt_id_wy.jpg Map Map Map Map Map Map Map Map Map Map Map Map
 
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.
 - https://files.airnowtech.org/airnow/today/cur_aqi_mt_id_wy.jpg Map Map Map Map Map Map Map Map Map Map Map Map
 
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 - https://files.airnowtech.org/airnow/today/anim_aqi_mt_id_wy.gif Map Map Map Map Map Map Map Map Map Map Map Map
 
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: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
Action DayAction Day
 
State Air Quality Resources
Air Quality Monitoring In Yellowstone County, Montana
American Lung Association (ALA) of the Montanna
Montana DEQ - Air Quality Information
Montana DEQ - Air Quality Monitoring
Montana DEQ - Contacts
Montana Department of Environmental Quality (DEQ)
Click on the city name for more detailed information.

printable summary
FORECAST CURRENT
AQI
Sun
Apr 23
Mon
Apr 24
Billings
aqi not available
aqi not available
16 
Birney
aqi not available
aqi not available
38 
Bozeman
aqi not available
aqi not available
12 
Broadus
aqi not available
aqi not available
30 
Butte
aqi not available
aqi not available
11 
Flathead Valley
aqi not available
aqi not available
26 
Great Falls
aqi not available
aqi not available
28 
Hamilton
aqi not available
aqi not available
19 
Helena
aqi not available
aqi not available
44 
Lewistown
aqi not available
aqi not available
31 
Libby
aqi not available
aqi not available
18 
Malta
aqi not available
aqi not available
38 
Missoula
aqi not available
aqi not available
40 
Seeley Lake
aqi not available
aqi not available
13 
Sidney
aqi not available
aqi not available
21 
Thompson Falls
aqi not available
aqi not available
Yellowstone National Park
aqi not available
aqi not available
61 
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.