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Air quality in Montana
Air quality index (AQI) and PM2.5 air pollution in Montana
LIVE AQI CITY RANKING
Real-time Montana
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | West Glacier | 33 |
| 2 | Great Falls | 31 |
| 3 | Broadus | 30 |
| 4 | Thompson Falls | 26 |
| 5 | Chester | 25 |
| 6 | Lewistown | 25 |
| 7 | Cut Bank | 24 |
| 8 | Miles City | 23 |
| 9 | Whitefish | 23 |
| 10 | Columbus | 22 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
122 Contributors
See all
LIVE AQI CITY RANKING
Real-time Montana
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Dillon | 3 |
| 2 | Helena Valley West Central | 3 |
| 3 | North Browning | 6 |
| 4 | Anaconda | 7 |
| 5 | Big Sky | 8 |
| 6 | Lolo | 8 |
| 7 | Ravalli | 8 |
| 8 | Libby | 9 |
| 9 | Choteau | 10 |
| 10 | Lincoln | 10 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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Moderate
Unhealthy for sensitive groups
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News
The latest air quality news and resources.
Montana air quality data attribution
122Contributors
- USA National Park Service
5 stations
- Montana Department of Environmental Quality
3 stations
2 Government Contributors
- Nyet
1 station
- Abi D.
1 station
- Crosscut Mountain Sports Center
1 station
3 Individual Contributors
- 117 Anonymous contributors
117 stations
117 Anonymous Contributors
Which is the most polluted city in Montana?
- West Glacier 33
- Great Falls 31
- Broadus 30
- Thompson Falls 26
- Chester 25
- Lewistown 25
- Cut Bank 24
- White Sulphur Springs 24
- Miles City 23
- Whitefish 23
- Columbus 22
- Pablo 22
- Circle 21
- Crow Agency 21
- Evergreen 21
- Glendive 21
- Harlowton 21
- Terry 21
- Columbia Falls 20
- Ekalaka 20
- Laurel 20
- Manhattan 20
- West Glendive 20
- Absarokee 19
- Belgrade 19
- Big Timber 19
- Charlo 19
- Four Corners 19
- Kalispell 19
- Lakeside 19
- Polson 19
- Somers 19
- Three Forks 19
- Townsend 19
- Wolf Point 19
- Baker 18
- Birney 18
- Colstrip 18
- Dayton 18
- Hysham 18
- Lame Deer 18
- Ryegate 18
- Billings 17
- Clinton 17
- Forsyth 17
- Hardin 17
- Lockwood 17
- Malmstrom Air Force Base 17
- Malta 17
- Roundup 17
- Stanford 17
- Frenchtown 16
- Jordan 16
- Livingston 16
- Wibaux 16
- Winnett 16
- Bonner-West Riverside 15
- Bozeman 15
- Browning 15
- Glasgow 15
- Hot Springs 15
- Plentywood 15
- Ronan 15
- Scobey 15
- Sidney 15
- Sun Prairie 15
- Bigfork 14
- Clancy 14
- East Helena 14
- Fort Benton 14
- Hamilton 14
- Havre 14
- Helena Valley Northeast 14
- Helena Valley Northwest 14
- Helena Valley Southeast 14
- Helena West Side 14
- Montana City 14
- Plains 14
- Arlee 13
- Boulder 13
- Butte 13
- Eureka 13
- Lambert 13
- South Browning 13
- Deer Lodge 12
- Helena 12
- Noxon 12
- Seeley Lake 12
- Stevensville 12
- Virginia City 12
- Warm Springs 12
- Conrad 11
- East Missoula 11
- Fort Belknap Agency 11
- Philipsburg 11
- Red Lodge 11
- Shelby 11
- West Yellowstone 11
- Whitehall 11
- Chinook 10
- Choteau 10
- Lincoln 10
- Missoula 10
- Orchard Homes 10
- Superior 10
- Butte-Silver Bow (Balance) 9
- Libby 9
- Big Sky 8
- Lolo 8
- Ravalli 8
- Wisdom 8
- Anaconda 7
- North Browning 6
- Dillon 3
- Helena Valley West Central 3
AQI US, Metric