Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 23:42, May 21
Live most polluted city ranking
Real-time Montana most polluted city ranking
Learn more about global air quality
Which is the most polluted city in Montana?
- Missoula38
- Teton County38
- Lewistown35
- Flathead County34
- Lewis and Clark County34
- West Glacier34
- East Helena33
- Lockwood31
- Clinton29
- Boulder27
- Lakeside27
- Shelby27
- Bigfork26
- Butte26
- Plains26
- Chester24
- Cut Bank24
- Deer Lodge24
- Dixon24
- Libby24
- Lolo24
- St. Ignatius24
- Thompson Falls24
- Alberton23
- Arlee23
- Choteau23
- Dillon23
- Troy23
- Woods Bay23
- Cascade County22
- Great Falls22
- Hamilton22
- Kalispell22
- Madison County22
- North Browning22
- Orchard Homes22
- Ravalli County22
- Whitefish22
- Cascade21
- Heart Butte21
- Helena21
- Helena Valley West Central21
- Noxon21
- Ronan21
- Seeley Lake21
- Wye21
- Beaverhead County20
- Columbia Falls20
- Darby20
- Glacier County20
- Lake County20
- Lincoln County20
- Piltzville20
- St. Marie20
- Ulm20
- Billings19
- Frenchtown19
- Havre19
- Hill County19
- Trout Creek19
- Judith Basin County18
- West Glendive18
- Bozeman17
- Churchill17
- Gallatin County17
- Livingston17
- Sun Prairie17
- Sweet Grass County16
- Absarokee15
- Corvallis15
- Malmstrom Air Force Base15
- Rudyard15
- Eureka14
- Marion14
- Missoula County14
- Park County14
- Roberts14
- Sedan14
- Toole County14
- Amsterdam13
- Anaconda-Deer Lodge County13
- Bear Dance13
- Belgrade13
- Big Arm13
- Big Timber13
- Birney13
- Bonner-West Riverside13
- Browning13
- Charlo13
- Clancy13
- Colstrip13
- Columbus13
- Conrad13
- Coram13
- Craig13
- Crow Agency13
- Dayton13
- East Glacier Park Village13
- East Missoula13
- Ennis13
- Evergreen13
- Gardiner13
- Geyser13
- Hardin13
- Harlowton13
- Helena Valley Northeast13
- Helena Valley Northwest13
- Helena Valley Southeast13
- Helena West Side13
- Hot Springs13
- Hysham13
- Lame Deer13
- Laurel13
- Lincoln13
- Lindisfarne13
- Manhattan13
- Martin City13
- Montana City13
- Pablo13
- Philipsburg13
- Phillips County13
- Polebridge13
- Potomac13
- Pryor13
- Ravalli13
- Roundup13
- Ryegate13
- Scobey13
- Shepherd13
- Sidney13
- Somers13
- South Browning13
- Stevensville13
- Stillwater County13
- Sula13
- Superior13
- Three Forks13
- Townsend13
- Victor13
- Virginia City13
- Walkerville13
- West Yellowstone13
- White Sulphur Springs13
- Whitehall13
- Wibaux13
- Wilsall13
- Winnett13
- Wisdom13
- Wolf Point13
- Big Sky12
- Chinook12
- Fort Belknap Agency12
- Fort Benton12
- Stanford12
- Culbertson11
- Roosevelt County11
- Malta10
- Baker9
- Ekalaka9
- Forsyth9
- Glasgow9
- Red Lodge9
- Circle8
- Four Corners8
- Froid8
- Glendive8
- Plentywood8
- Richland8
- Rosebud County8
- Bridger CDP6
- Broadus6
- Jordan6
- Miles City6
- Terry6
- Custer County3
