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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 |  Malta | 48 |
| 2 | Broadus | 25 |
| 3 | Libby | 25 |
| 4 | Miles City | 25 |
| 5 | Pablo | 24 |
| 6 | East Helena | 22 |
| 7 | Lewistown | 22 |
| 8 | Seeley Lake | 21 |
| 9 | Lambert | 19 |
| 10 | Arlee | 18 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
118 Contributors
See all
LIVE AQI CITY RANKING
Real-time Montana
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | West Glendive | 4 |
| 2 | Butte | 6 |
| 3 | Ravalli | 6 |
| 4 | Winnett | 6 |
| 5 | Anaconda | 7 |
| 6 | Bozeman | 7 |
| 7 | Browning | 8 |
| 8 | Columbus | 8 |
| 9 | Crow Agency | 8 |
| 10 | Hamilton | 8 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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News
The latest air quality news and resources.
Montana air quality data attribution
118Contributors
- Montana Department of Environmental Quality
3 stations
- USA National Park Service
4 stations
2 Government Contributors
- AirGradient
1 station
Corporate Contributor
- Nyet
1 station
- Abi D.
1 station
- Crosscut Mountain Sports Center
1 station
3 Individual Contributors
112 Anonymous contributors112 stations
112 Anonymous Contributors
Which is the most polluted city in Montana?
- East Missoula 54
- Orchard Homes 54
- Superior 54
- Dayton 53
- Evergreen 53
- Lakeside 53
- Somers 53
- Malta 48
- Colstrip 28
- Lame Deer 28
- Baker 27
- Birney 27
- Ekalaka 27
- Forsyth 26
- Broadus 25
- Chinook 25
- Libby 25
- Miles City 25
- Wibaux 25
- Fort Belknap Agency 24
- Glendive 24
- Hysham 24
- Pablo 24
- Terry 24
- South Browning 23
- Circle 22
- Cut Bank 22
- East Helena 22
- Glasgow 22
- Lewistown 22
- Plentywood 22
- Wolf Point 22
- Conrad 21
- Jordan 21
- Scobey 21
- Seeley Lake 21
- Shelby 21
- Sidney 21
- Lockwood 20
- Lambert 19
- Laurel 19
- Arlee 18
- Charlo 18
- Clancy 18
- Fort Benton 18
- Four Corners 18
- Frenchtown 18
- Helena Valley Northeast 18
- Helena Valley Northwest 18
- Helena Valley Southeast 18
- Helena West Side 18
- Lincoln 18
- Malmstrom Air Force Base 18
- Montana City 18
- Philipsburg 18
- Roundup 18
- Stanford 18
- Sun Prairie 18
- Townsend 18
- White Sulphur Springs 18
- Wisdom 18
- Belgrade 17
- Boulder 17
- Deer Lodge 17
- Manhattan 17
- Ronan 17
- Three Forks 17
- Warm Springs 17
- Butte-Silver Bow (Balance) 16
- Chester 16
- Great Falls 16
- Harlowton 16
- Hot Springs 16
- Plains 16
- Ryegate 16
- Thompson Falls 16
- Virginia City 16
- Whitehall 16
- Helena 15
- Stevensville 15
- West Yellowstone 15
- Clinton 14
- Kalispell 14
- Big Timber 13
- Choteau 13
- Columbia Falls 13
- Missoula 13
- Whitefish 13
- Big Sky 12
- Bonner-West Riverside 12
- Hardin 12
- Noxon 12
- Billings 11
- Havre 11
- Helena Valley West Central 11
- Livingston 11
- Polson 11
- Red Lodge 11
- Absarokee 10
- Dillon 10
- West Glacier 10
- Bigfork 9
- Eureka 9
- Lolo 9
- North Browning 9
- Browning 8
- Columbus 8
- Crow Agency 8
- Hamilton 8
- Anaconda 7
- Bozeman 7
- Butte 6
- Ravalli 6
- Winnett 6
- West Glendive 4
AQI US, Metric