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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 | 52 |
| 2 | Havre | 44 |
| 3 | Hamilton | 40 |
| 4 | Cut Bank | 38 |
| 5 | Chester | 35 |
| 6 | East Helena | 34 |
| 7 | Lewistown | 34 |
| 8 | Hot Springs | 29 |
| 9 | Frenchtown | 27 |
| 10 | Absarokee | 25 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
120 Contributors
See all
LIVE AQI CITY RANKING
Real-time Montana
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Lincoln | 5 |
| 2 | West Yellowstone | 5 |
| 3 | Big Sky | 7 |
| 4 | Browning | 8 |
| 5 | Red Lodge | 10 |
| 6 | Hardin | 11 |
| 7 | West Glendive | 11 |
| 8 | Anaconda | 12 |
| 9 | Bonner-West Riverside | 13 |
| 10 | North Browning | 13 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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Montana air quality data attribution
120Contributors
- USA National Park Service
4 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
- 115 Anonymous contributors
115 stations
115 Anonymous Contributors
Which is the most polluted city in Montana?
- Great Falls 52
- Havre 44
- Hamilton 40
- Cut Bank 38
- Chester 35
- East Helena 34
- Lewistown 34
- Hot Springs 29
- Frenchtown 27
- Absarokee 25
- Malta 25
- Wisdom 25
- Columbus 24
- Big Timber 23
- Lambert 23
- Miles City 23
- Noxon 23
- Whitefish 23
- Arlee 22
- Butte 22
- Colstrip 22
- Forsyth 22
- Helena 22
- Lame Deer 22
- Laurel 22
- Sun Prairie 22
- Thompson Falls 22
- Birney 21
- Helena Valley Northeast 21
- Hysham 21
- Jordan 21
- Libby 21
- Lockwood 21
- Malmstrom Air Force Base 21
- Belgrade 20
- Bozeman 20
- Charlo 20
- Choteau 20
- Glasgow 20
- Helena Valley Northwest 20
- Livingston 20
- Seeley Lake 20
- West Glacier 20
- White Sulphur Springs 20
- Winnett 20
- Harlowton 19
- Helena Valley Southeast 19
- Helena Valley West Central 19
- Kalispell 19
- Missoula 19
- Roundup 19
- Ryegate 19
- Stanford 19
- Broadus 18
- Circle 18
- Columbia Falls 18
- Fort Benton 18
- Helena West Side 18
- Montana City 18
- Pablo 18
- Philipsburg 18
- Townsend 18
- Wolf Point 18
- Butte-Silver Bow (Balance) 17
- Chinook 17
- Clancy 17
- Clinton 17
- Conrad 17
- Deer Lodge 17
- Dillon 17
- East Missoula 17
- Eureka 17
- Fort Belknap Agency 17
- Orchard Homes 17
- Ronan 17
- Stevensville 17
- Superior 17
- Warm Springs 17
- Boulder 16
- Shelby 16
- Terry 16
- Bigfork 15
- Four Corners 15
- Glendive 15
- Manhattan 15
- Plains 15
- Polson 15
- Ravalli 15
- Scobey 15
- Three Forks 15
- Virginia City 15
- Whitehall 15
- Baker 14
- Billings 14
- Crow Agency 14
- Dayton 14
- Ekalaka 14
- Evergreen 14
- Lakeside 14
- Lolo 14
- Sidney 14
- Somers 14
- South Browning 14
- Bonner-West Riverside 13
- North Browning 13
- Plentywood 13
- Wibaux 13
- Anaconda 12
- Hardin 11
- West Glendive 11
- Red Lodge 10
- Browning 8
- Big Sky 7
- Lincoln 5
- West Yellowstone 5
AQI US, Metric