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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 |  Bonner-West Riverside | 59 |
| 2 | Cut Bank | 32 |
| 3 | Broadus | 30 |
| 4 | Libby | 30 |
| 5 | Townsend | 29 |
| 6 | Charlo | 27 |
| 7 | Thompson Falls | 26 |
| 8 | Columbia Falls | 24 |
| 9 | West Yellowstone | 24 |
| 10 | Big Timber | 23 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
116 Contributors
See all
LIVE AQI CITY RANKING
Real-time Montana
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Anaconda | 0 |
| 2 | Helena Valley West Central | 5 |
| 3 | Plains | 5 |
| 4 | Wisdom | 5 |
| 5 | West Glacier | 6 |
| 6 | Hamilton | 7 |
| 7 | Lincoln | 8 |
| 8 | Crow Agency | 9 |
| 9 | Lolo | 10 |
| 10 | Ravalli | 10 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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The latest air quality news and resources.
Montana air quality data attribution
116Contributors
- USA National Park Service
1 station
- 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
- 111 Anonymous contributors
111 stations
111 Anonymous Contributors
Which is the most polluted city in Montana?
- Bonner-West Riverside 59
- Laurel 56
- Lockwood 53
- Ryegate 51
- Roundup 46
- Harlowton 44
- Cut Bank 32
- Broadus 30
- Libby 30
- Fort Benton 29
- Four Corners 29
- South Browning 29
- Stanford 29
- Townsend 29
- White Sulphur Springs 29
- Charlo 27
- Chinook 27
- Evergreen 27
- Malmstrom Air Force Base 27
- Lakeside 26
- Shelby 26
- Somers 26
- Thompson Falls 26
- Conrad 25
- Dayton 25
- Fort Belknap Agency 25
- Manhattan 25
- Sun Prairie 25
- Birney 24
- Columbia Falls 24
- West Yellowstone 24
- Big Timber 23
- Glasgow 23
- Great Falls 23
- Belgrade 22
- Boulder 22
- Bozeman 22
- Butte-Silver Bow (Balance) 22
- Deer Lodge 22
- Kalispell 22
- Lame Deer 22
- Noxon 22
- Philipsburg 22
- Plentywood 22
- Scobey 22
- Sidney 22
- Three Forks 22
- Virginia City 22
- Warm Springs 22
- Wolf Point 22
- Clancy 21
- Helena Valley Northeast 21
- Helena Valley Northwest 21
- Helena Valley Southeast 21
- Helena West Side 21
- Montana City 21
- Pablo 21
- Whitehall 21
- East Missoula 20
- Jordan 20
- Superior 20
- Butte 19
- Circle 19
- Havre 19
- Orchard Homes 19
- Seeley Lake 19
- Absarokee 18
- Arlee 18
- Dillon 18
- Hot Springs 18
- Lewistown 18
- Livingston 18
- Malta 18
- East Helena 17
- Eureka 17
- Helena 17
- Ronan 17
- Stevensville 17
- Big Sky 16
- Columbus 16
- Glendive 16
- Polson 16
- Whitefish 16
- Winnett 16
- Bigfork 15
- Colstrip 15
- Hysham 15
- Billings 14
- Clinton 14
- Frenchtown 14
- West Glendive 14
- Choteau 13
- Ekalaka 13
- Forsyth 13
- Hardin 13
- Miles City 13
- Missoula 13
- Terry 13
- Lambert 12
- Wibaux 12
- Baker 11
- Browning 11
- Chester 11
- Red Lodge 11
- Lolo 10
- Ravalli 10
- Crow Agency 9
- Lincoln 8
- North Browning 8
- Hamilton 7
- West Glacier 6
- Helena Valley West Central 5
- Plains 5
- Wisdom 5
- Anaconda 0
AQI US, Metric