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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 |  Lambert | 40 |
| 2 | Malta | 38 |
| 3 | Broadus | 29 |
| 4 | Eureka | 26 |
| 5 | West Glacier | 25 |
| 6 | East Helena | 24 |
| 7 | Charlo | 21 |
| 8 | Libby | 21 |
| 9 | Helena | 20 |
| 10 | Pablo | 20 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
113 Contributors
See all
LIVE AQI CITY RANKING
Real-time Montana
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Wisdom | 2 |
| 2 | West Yellowstone | 3 |
| 3 | Hardin | 6 |
| 4 | Billings | 9 |
| 5 | Big Sky | 10 |
| 6 | Bonner-West Riverside | 10 |
| 7 | Crow Agency | 10 |
| 8 | Dillon | 10 |
| 9 | Havre | 10 |
| 10 | Helena Valley West Central | 10 |
(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
113Contributors
- 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
- 108 Anonymous contributors
108 stations
108 Anonymous Contributors
Which is the most polluted city in Montana?
- Lambert 40
- Baker 39
- Ekalaka 38
- Malta 38
- Colstrip 37
- Sidney 37
- Lame Deer 36
- Wibaux 36
- Glendive 35
- Birney 34
- Forsyth 34
- Plentywood 34
- Scobey 34
- Wolf Point 34
- Circle 32
- Glasgow 32
- Terry 32
- Hysham 30
- Jordan 30
- Broadus 29
- Fort Belknap Agency 29
- Chinook 28
- Fort Benton 27
- Malmstrom Air Force Base 27
- Eureka 26
- Philipsburg 26
- Sun Prairie 26
- Conrad 25
- Shelby 25
- Stanford 25
- Warm Springs 25
- West Glacier 25
- Deer Lodge 24
- East Helena 24
- East Missoula 24
- Four Corners 24
- Laurel 24
- Lockwood 24
- Manhattan 24
- White Sulphur Springs 24
- Boulder 23
- Butte-Silver Bow (Balance) 23
- Clancy 23
- Harlowton 23
- Helena Valley Northwest 23
- Helena West Side 23
- Lincoln 23
- Orchard Homes 23
- Roundup 23
- Ryegate 23
- South Browning 23
- Superior 23
- Three Forks 23
- Townsend 23
- Virginia City 23
- Helena Valley Northeast 22
- Helena Valley Southeast 22
- Montana City 22
- Whitehall 22
- Charlo 21
- Libby 21
- Dayton 20
- Evergreen 20
- Helena 20
- Lakeside 20
- Pablo 20
- Ronan 20
- Somers 20
- Hot Springs 19
- Miles City 19
- West Glendive 19
- Arlee 18
- Belgrade 18
- Big Timber 18
- Frenchtown 18
- Kalispell 18
- Stevensville 18
- Absarokee 17
- Hamilton 17
- Bigfork 16
- Browning 16
- Cut Bank 16
- Missoula 16
- Noxon 16
- Thompson Falls 16
- Choteau 15
- Clinton 15
- Columbia Falls 15
- Livingston 15
- Polson 15
- Whitefish 15
- Butte 14
- Great Falls 14
- Plains 14
- Ravalli 14
- Winnett 14
- Anaconda 13
- Bozeman 13
- Chester 13
- Lewistown 13
- Seeley Lake 13
- North Browning 12
- Red Lodge 12
- Columbus 11
- Big Sky 10
- Bonner-West Riverside 10
- Crow Agency 10
- Dillon 10
- Havre 10
- Helena Valley West Central 10
- Lolo 10
- Billings 9
- Hardin 6
- West Yellowstone 3
- Wisdom 2
AQI US, Metric