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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 |  East Helena | 29 |
| 2 | Libby | 28 |
| 3 | Great Falls | 27 |
| 4 | Townsend | 27 |
| 5 | Livingston | 26 |
| 6 | Broadus | 23 |
| 7 | Absarokee | 21 |
| 8 | Lambert | 21 |
| 9 | West Glacier | 21 |
| 10 | Big Timber | 20 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
117 Contributors
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3D animated air pollution map
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Montana air quality data attribution
117Contributors
- 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
- 112 Anonymous contributors
112 stations
112 Anonymous Contributors
Which is the most polluted city in Montana?
- East Helena 29
- Libby 28
- Great Falls 27
- Townsend 27
- Livingston 26
- Broadus 23
- Absarokee 21
- Lambert 21
- West Glacier 21
- Big Timber 20
- Billings 20
- Helena 20
- Noxon 20
- Red Lodge 20
- Hardin 19
- Lincoln 19
- Thompson Falls 19
- Charlo 18
- Columbus 18
- Hot Springs 18
- Butte 16
- Cut Bank 16
- Helena Valley West Central 16
- Malta 16
- Arlee 15
- Belgrade 15
- Clinton 15
- Crow Agency 15
- Pablo 15
- Ronan 15
- Chester 14
- Dillon 14
- Plentywood 13
- Polson 13
- Stevensville 13
- Bonner-West Riverside 12
- Eureka 12
- Hamilton 12
- Missoula 12
- West Yellowstone 12
- Ekalaka 11
- Frenchtown 11
- Kalispell 11
- Lolo 11
- Baker 10
- Boulder 10
- Clancy 10
- Columbia Falls 10
- Helena Valley Northeast 10
- Helena Valley Northwest 10
- Helena Valley Southeast 10
- Helena West Side 10
- Miles City 10
- Montana City 10
- Scobey 10
- White Sulphur Springs 10
- Bigfork 9
- Birney 9
- Evergreen 9
- Superior 9
- Terry 9
- Whitefish 9
- Wisdom 9
- Butte-Silver Bow (Balance) 8
- Choteau 8
- Colstrip 8
- Conrad 8
- Dayton 8
- Deer Lodge 8
- East Missoula 8
- Forsyth 8
- Fort Benton 8
- Four Corners 8
- Glasgow 8
- Glendive 8
- Harlowton 8
- Hysham 8
- Jordan 8
- Lakeside 8
- Lame Deer 8
- Laurel 8
- Lockwood 8
- Malmstrom Air Force Base 8
- Manhattan 8
- North Browning 8
- Orchard Homes 8
- Philipsburg 8
- Roundup 8
- Ryegate 8
- Sidney 8
- Somers 8
- Stanford 8
- Sun Prairie 8
- Three Forks 8
- Virginia City 8
- Warm Springs 8
- Whitehall 8
- Wibaux 8
- Wolf Point 8
- Shelby 7
- West Glendive 7
- Chinook 6
- Circle 6
- Fort Belknap Agency 6
- Lewistown 6
- Ravalli 6
- South Browning 6
- Winnett 6
- Big Sky 5
- Havre 5
- Anaconda 0
- Bozeman 0
- Browning 0
- Plains 0
- Seeley Lake 0
AQI US, Metric