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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 | 43 |
| 2 | Miles City | 29 |
| 3 | Libby | 28 |
| 4 | Broadus | 27 |
| 5 | Townsend | 27 |
| 6 | East Helena | 22 |
| 7 | Lambert | 20 |
| 8 | Livingston | 20 |
| 9 | Big Timber | 19 |
| 10 | Absarokee | 18 |
(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 | Bonner-West Riverside | 0 |
| 3 | Bozeman | 0 |
| 4 | Plains | 0 |
| 5 | West Glacier | 0 |
| 6 | Wisdom | 1 |
| 7 | Chester | 4 |
| 8 | Havre | 4 |
| 9 | Winnett | 4 |
| 10 | Browning | 5 |
(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?
- Malta 43
- Miles City 29
- Libby 28
- Broadus 27
- Townsend 27
- East Helena 22
- Lambert 20
- Livingston 20
- Scobey 20
- Big Timber 19
- Glasgow 19
- Shelby 19
- Absarokee 18
- Billings 18
- Conrad 18
- Fort Belknap Agency 18
- Fort Benton 18
- Helena 18
- Arlee 17
- Colstrip 17
- Evergreen 17
- Great Falls 17
- Harlowton 17
- Hysham 17
- Jordan 17
- Lame Deer 17
- Lincoln 17
- Malmstrom Air Force Base 17
- Red Lodge 17
- Roundup 17
- Ryegate 17
- South Browning 17
- Stanford 17
- Wolf Point 17
- Boulder 16
- Chinook 16
- Columbus 16
- Dayton 16
- Deer Lodge 16
- Forsyth 16
- Helena Valley Northwest 16
- Helena West Side 16
- Lakeside 16
- Somers 16
- Sun Prairie 16
- White Sulphur Springs 16
- Big Sky 15
- Birney 15
- Butte-Silver Bow (Balance) 15
- Charlo 15
- Circle 15
- Clancy 15
- Ekalaka 15
- Hardin 15
- Helena Valley Northeast 15
- Helena Valley Southeast 15
- Lockwood 15
- Montana City 15
- Superior 15
- Warm Springs 15
- East Missoula 14
- Four Corners 14
- Laurel 14
- Manhattan 14
- Orchard Homes 14
- Terry 14
- Whitehall 14
- Hot Springs 13
- Philipsburg 13
- Plentywood 13
- Ronan 13
- Thompson Falls 13
- Three Forks 13
- Virginia City 13
- Baker 12
- Belgrade 12
- Hamilton 12
- Helena Valley West Central 12
- Pablo 12
- Polson 12
- Columbia Falls 11
- Glendive 11
- Kalispell 11
- Stevensville 11
- Choteau 10
- Cut Bank 10
- Eureka 10
- Seeley Lake 10
- Clinton 9
- Crow Agency 9
- Missoula 9
- West Glendive 9
- Wibaux 9
- Bigfork 8
- North Browning 8
- Noxon 8
- Sidney 8
- West Yellowstone 8
- Lewistown 7
- Ravalli 7
- Lolo 6
- Whitefish 6
- Browning 5
- Butte 5
- Dillon 5
- Frenchtown 5
- Chester 4
- Havre 4
- Winnett 4
- Wisdom 1
- Anaconda 0
- Bonner-West Riverside 0
- Bozeman 0
- Plains 0
- West Glacier 0
AQI US, Metric