Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
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 |  Broadus | 53 |
| 2 | Malta | 45 |
| 3 | Helena | 36 |
| 4 | East Helena | 33 |
| 5 | Missoula | 32 |
| 6 | Townsend | 32 |
| 7 | Wisdom | 32 |
| 8 | Bonner-West Riverside | 30 |
| 9 | Dillon | 30 |
| 10 | Frenchtown | 30 |
(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 | Choteau | 6 |
| 2 | Browning | 11 |
| 3 | Lincoln | 11 |
| 4 | Lambert | 12 |
| 5 | Red Lodge | 13 |
| 6 | Whitefish | 13 |
| 7 | Bigfork | 14 |
| 8 | Seeley Lake | 14 |
| 9 | West Glacier | 15 |
| 10 | Anaconda | 16 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
News
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?
- Broadus 53
- Laurel 53
- Lockwood 52
- Malta 45
- Helena 36
- East Helena 33
- Missoula 32
- Townsend 32
- Wisdom 32
- Pablo 31
- Bonner-West Riverside 30
- Dillon 30
- Frenchtown 30
- Columbia Falls 29
- Havre 28
- Arlee 26
- Charlo 26
- Helena Valley West Central 26
- Hot Springs 26
- Ronan 26
- Bozeman 25
- Butte 25
- Hamilton 25
- Superior 25
- Big Timber 24
- Belgrade 23
- Libby 23
- Big Sky 22
- East Missoula 22
- Kalispell 22
- Noxon 22
- Orchard Homes 22
- Philipsburg 22
- Stevensville 22
- Thompson Falls 22
- Butte-Silver Bow (Balance) 21
- Clinton 21
- Dayton 21
- Deer Lodge 21
- Evergreen 21
- Lakeside 21
- Livingston 21
- Miles City 21
- Somers 21
- Virginia City 21
- Warm Springs 21
- Billings 20
- Boulder 20
- Cut Bank 20
- Four Corners 20
- Glasgow 20
- Scobey 20
- Whitehall 20
- Winnett 20
- Birney 19
- Chinook 19
- Clancy 19
- Fort Belknap Agency 19
- Helena Valley Northeast 19
- Helena Valley Northwest 19
- Helena Valley Southeast 19
- Helena West Side 19
- Manhattan 19
- Montana City 19
- Plentywood 19
- Polson 19
- Ravalli 19
- South Browning 19
- Three Forks 19
- Wolf Point 19
- Absarokee 18
- Chester 18
- Circle 18
- Fort Benton 18
- Great Falls 18
- Jordan 18
- Lame Deer 18
- Lolo 18
- Malmstrom Air Force Base 18
- Plains 18
- Roundup 18
- Ryegate 18
- Sidney 18
- West Yellowstone 18
- Columbus 17
- Conrad 17
- Eureka 17
- Hardin 17
- Harlowton 17
- Shelby 17
- Stanford 17
- Sun Prairie 17
- White Sulphur Springs 17
- Anaconda 16
- Baker 16
- Colstrip 16
- Crow Agency 16
- Ekalaka 16
- Hysham 16
- Lewistown 16
- Wibaux 16
- Forsyth 15
- Glendive 15
- Terry 15
- West Glacier 15
- Bigfork 14
- Seeley Lake 14
- West Glendive 14
- Red Lodge 13
- Whitefish 13
- Lambert 12
- Browning 11
- Lincoln 11
- North Browning 8
- Choteau 6
AQI US, Metric