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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 | Great Falls | 33 |
| 2 | East Helena | 31 |
| 3 | Bonner-West Riverside | 21 |
| 4 | Malta | 21 |
| 5 | Butte | 20 |
| 6 | West Glacier | 20 |
| 7 | Chester | 19 |
| 8 | Noxon | 19 |
| 9 | Lewistown | 18 |
| 10 | Clinton | 17 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
121 Contributors
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3D animated air pollution map
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Unhealthy for sensitive groups
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News
The latest air quality news and resources.
Montana air quality data attribution
121Contributors
- 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
- 116 Anonymous contributors
116 stations
116 Anonymous Contributors
Which is the most polluted city in Montana?
- Great Falls 33
- East Helena 31
- Bonner-West Riverside 21
- Malta 21
- Butte 20
- Conrad 20
- West Glacier 20
- Chester 19
- Noxon 19
- Fort Benton 18
- Lewistown 18
- Clinton 17
- Miles City 17
- Shelby 17
- Arlee 16
- Plentywood 16
- Scobey 16
- Sidney 16
- Wolf Point 16
- Lambert 15
- Baker 14
- Chinook 14
- Crow Agency 14
- Fort Belknap Agency 14
- Frenchtown 14
- Glasgow 14
- Glendive 14
- Havre 14
- West Glendive 14
- Wibaux 14
- Billings 13
- Circle 13
- Colstrip 13
- Forsyth 13
- Hardin 13
- Hot Springs 13
- Jordan 13
- Malmstrom Air Force Base 13
- Sun Prairie 13
- Terry 13
- Thompson Falls 13
- Winnett 13
- Birney 12
- Columbus 12
- Ekalaka 12
- Hysham 12
- Lame Deer 12
- Stanford 12
- Roundup 11
- Absarokee 10
- Broadus 10
- Hamilton 10
- Harlowton 10
- Pablo 10
- Virginia City 10
- Boulder 9
- Clancy 9
- Cut Bank 9
- Deer Lodge 9
- Helena 9
- Helena Valley Northeast 9
- Helena Valley Northwest 9
- Helena Valley Southeast 9
- Helena West Side 9
- Laurel 9
- Montana City 9
- Ryegate 9
- White Sulphur Springs 9
- Whitefish 9
- Whitehall 9
- Butte-Silver Bow (Balance) 8
- Kalispell 8
- Lockwood 8
- Manhattan 8
- Seeley Lake 8
- Stevensville 8
- Three Forks 8
- Townsend 8
- Warm Springs 8
- Charlo 7
- Eureka 7
- Libby 7
- Bozeman 6
- Dayton 6
- East Missoula 6
- Evergreen 6
- Lakeside 6
- Ronan 6
- Somers 6
- South Browning 6
- West Yellowstone 6
- Anaconda 5
- Big Timber 5
- Four Corners 5
- Livingston 5
- Orchard Homes 5
- Philipsburg 5
- Plains 5
- Red Lodge 5
- Superior 5
- Choteau 4
- Columbia Falls 4
- Dillon 4
- Lincoln 4
- Missoula 4
- North Browning 4
- Belgrade 3
- Polson 3
- Ravalli 3
- Browning 2
- Helena Valley West Central 2
- Lolo 2
- Bigfork 1
- Wisdom 1
- Big Sky 0
AQI US, Metric