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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 |  Libby | 36 |
| 2 | Hot Springs | 28 |
| 3 | Broadus | 25 |
| 4 | Townsend | 24 |
| 5 | Cut Bank | 23 |
| 6 | Eureka | 22 |
| 7 | Kalispell | 21 |
| 8 | Big Sky | 20 |
| 9 | Columbia Falls | 20 |
| 10 | Winnett | 20 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
115 Contributors
See all
LIVE AQI CITY RANKING
Real-time Montana
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Arlee | 5 |
| 2 | Anaconda | 6 |
| 3 | Hamilton | 6 |
| 4 | Helena Valley West Central | 6 |
| 5 | Miles City | 6 |
| 6 | Noxon | 6 |
| 7 | Lambert | 7 |
| 8 | Plains | 7 |
| 9 | Charlo | 8 |
| 10 | Frenchtown | 8 |
(local time)
SEE WORLD AQI RANKING
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
115Contributors
- 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
- 110 Anonymous contributors
110 stations
110 Anonymous Contributors
Which is the most polluted city in Montana?
- Birney 52
- Lame Deer 48
- Laurel 46
- Ryegate 44
- Harlowton 43
- Roundup 39
- Lockwood 37
- Libby 36
- Stanford 35
- Chinook 31
- Fort Belknap Agency 30
- Fort Benton 29
- Colstrip 28
- Hot Springs 28
- Malmstrom Air Force Base 27
- Shelby 27
- White Sulphur Springs 27
- Plentywood 26
- Scobey 26
- Broadus 25
- Conrad 25
- Sun Prairie 25
- Four Corners 24
- South Browning 24
- Townsend 24
- Cut Bank 23
- Evergreen 23
- Glasgow 23
- Somers 23
- Dayton 22
- Eureka 22
- Lakeside 22
- Manhattan 22
- Virginia City 22
- Kalispell 21
- Three Forks 21
- Wolf Point 21
- Big Sky 20
- Clancy 20
- Columbia Falls 20
- Helena Valley Northeast 20
- Helena Valley Northwest 20
- Helena Valley Southeast 20
- Helena West Side 20
- Montana City 20
- Whitehall 20
- Winnett 20
- Absarokee 19
- Boulder 19
- Bozeman 19
- Chester 19
- Columbus 19
- Great Falls 19
- Jordan 19
- West Yellowstone 19
- Big Timber 18
- Pablo 18
- Seeley Lake 18
- Sidney 18
- Belgrade 17
- Bigfork 17
- Butte-Silver Bow (Balance) 17
- Deer Lodge 17
- East Helena 17
- Lincoln 17
- Thompson Falls 17
- Billings 16
- Warm Springs 16
- Wibaux 16
- Circle 15
- Clinton 15
- East Missoula 15
- Hardin 15
- Hysham 15
- Orchard Homes 15
- Philipsburg 15
- Red Lodge 15
- Ronan 15
- Stevensville 15
- Baker 14
- Butte 14
- Ekalaka 14
- Glendive 14
- Lewistown 14
- Polson 14
- West Glendive 14
- Whitefish 14
- Bonner-West Riverside 13
- Dillon 13
- Forsyth 13
- Helena 13
- Livingston 13
- Missoula 13
- Superior 13
- Choteau 12
- Crow Agency 12
- Malta 12
- Terry 12
- Browning 11
- Lolo 11
- Ravalli 11
- West Glacier 11
- Wisdom 11
- Havre 10
- Charlo 8
- Frenchtown 8
- North Browning 8
- Lambert 7
- Plains 7
- Anaconda 6
- Hamilton 6
- Helena Valley West Central 6
- Miles City 6
- Noxon 6
- Arlee 5
AQI US, Metric