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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 | 48 |
| 2 | Great Falls | 41 |
| 3 | Sidney | 38 |
| 4 | East Helena | 36 |
| 5 | Belgrade | 35 |
| 6 | Gardiner | 34 |
| 7 | Townsend | 34 |
| 8 | Noxon | 32 |
| 9 | Helena | 29 |
| 10 | West Glacier | 29 |
(Local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
130 Contributors
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LIVE AQI CITY RANKING
Real-time Montana
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Choteau | 0 |
| 2 | Dillon | 2 |
| 3 | Helena West Side | 7 |
| 4 | Billings | 12 |
| 5 | East Missoula | 12 |
| 6 | North Browning | 12 |
| 7 | Coram | 13 |
| 8 | Frenchtown | 13 |
| 9 | Miles City | 13 |
| 10 | Libby | 14 |
(Local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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Montana air quality data attribution
130Contributors
- Montana Department of Environmental Quality
21 stations
- USA National Park Service
4 stations
2 Government Contributors
- Nyet
1 station
- Abi D.
1 station
- Crosscut Mountain Sports Center
1 station
- Bellamoo
1 station
- EMBG
1 station
5 Individual Contributors
123 Anonymous contributors123 stations
123 Anonymous Contributors
Which is the most polluted city in Montana?
- Lambert 48
- Great Falls 41
- Sidney 38
- East Helena 36
- Belgrade 35
- Gardiner 34
- Townsend 34
- Noxon 32
- Helena 29
- West Glacier 29
- Arlee 28
- Charlo 28
- Big Timber 27
- Bozeman 27
- Browning 27
- Clinton 27
- Hot Springs 27
- Missoula 27
- Plains 27
- Stevensville 27
- Troy 27
- Greenough 26
- Pryor 26
- Thompson Falls 26
- Victor 26
- Corvallis 25
- Kalispell 25
- Absarokee 24
- Broadus 24
- Hamilton 24
- Helena Valley West Central 24
- Livingston 24
- Lockwood 24
- Pablo 24
- Potomac 24
- Ulm 24
- Wilsall 24
- Cascade 23
- Craig 23
- Ennis 23
- Hardin 23
- Lewistown 23
- Martin City 23
- Polson 23
- West Yellowstone 23
- Whitefish 23
- Big Sky 22
- Chester 22
- Columbus 22
- Superior 22
- Winnett 22
- Bonner-West Riverside 21
- Butte 21
- Eureka 21
- Lolo 21
- Orchard Homes 21
- Ronan 21
- Scobey 21
- Alta 20
- Dayton 20
- Ekalaka 20
- Malta 20
- Plentywood 20
- Polebridge 20
- Seeley Lake 20
- Wolf Point 20
- Bigfork 19
- Circle 19
- Colstrip 19
- Columbia Falls 19
- Crow Agency 19
- Evergreen 19
- Forsyth 19
- Glasgow 19
- Glendive 19
- Hysham 19
- Lincoln 19
- Red Lodge 19
- Roundup 19
- Somers 19
- Terry 19
- Virginia City 19
- Baker 18
- Birney 18
- Chinook 18
- Clancy 18
- Cut Bank 18
- Four Corners 18
- Helena Valley Northeast 18
- Helena Valley Northwest 18
- Helena Valley Southeast 18
- Jordan 18
- Lame Deer 18
- Manhattan 18
- Montana City 18
- Three Forks 18
- Whitehall 18
- Wibaux 18
- East Glacier Park 17
- Fort Belknap Agency 17
- Harlowton 17
- Havre 17
- Lakeside 17
- Laurel 17
- Malmstrom Air Force Base 17
- Ryegate 17
- Sun Prairie 17
- West Glendive 17
- White Sulphur Springs 17
- Big Arm 16
- Boulder 16
- Conrad 16
- Fort Benton 16
- Stanford 16
- Darby 15
- Ravalli 15
- South Browning 15
- Anaconda 14
- Butte-Silver Bow (Balance) 14
- Deer Lodge 14
- Libby 14
- Philipsburg 14
- Sula 14
- Warm Springs 14
- Wisdom 14
- Coram 13
- Frenchtown 13
- Miles City 13
- Shelby 13
- Billings 12
- East Missoula 12
- North Browning 12
- Helena West Side 7
- Dillon 2
- Choteau 0
AQI US, Metric