Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 11:41, Jun 08
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?
- East Helena31
- Lewistown26
- St. Ignatius24
- Butte23
- Boulder21
- Pablo21
- Cut Bank19
- Glacier County19
- Libby19
- Columbia Falls18
- Plains18
- Bear Dance17
- Big Horn County17
- Darby17
- Lewis and Clark County17
- Lockwood17
- Noxon17
- Big Sky16
- Corvallis16
- Great Falls16
- Lake County16
- Madison County16
- North Browning16
- Thompson Falls16
- Cascade15
- Havre15
- Roberts15
- Arlee14
- Culbertson14
- Hamilton14
- Heart Butte14
- Phillips County14
- Ronan14
- Seeley Lake14
- Shelby14
- Sweet Grass County14
- Bozeman13
- Choteau13
- Dillon13
- Helena13
- Lakeside13
- Lincoln County13
- Roosevelt County13
- Churchill12
- Four Corners12
- Kalispell12
- Missoula County12
- Ravalli County12
- Gallatin County11
- Hill County11
- Judith Basin County11
- Livingston11
- Missoula11
- Park County11
- Stillwater County11
- Deer Lodge10
- Orchard Homes10
- Park City10
- West Glendive10
- Whitefish10
- Baker9
- Big Arm9
- Billings9
- Charlo9
- Custer County9
- Dayton9
- Ekalaka9
- Flathead County9
- Hot Springs9
- Marion9
- Red Lodge9
- Sanders County9
- Superior9
- Toole County9
- Ulm9
- Wibaux9
- Absarokee8
- Bigfork8
- Broadus8
- Evergreen8
- Frenchtown8
- Froid8
- Glendive8
- Helena Valley West Central8
- Lindisfarne8
- Miles City8
- Plentywood8
- Polson8
- Ravalli8
- Richland8
- Scobey8
- Sidney8
- Somers8
- Terry8
- Wye8
- Birney7
- Bridger CDP7
- Coram7
- Eureka7
- Martin City7
- Piltzville7
- Polebridge7
- West Yellowstone7
- Amsterdam6
- Anaconda-Deer Lodge County6
- Belgrade6
- Big Timber6
- Bonner-West Riverside6
- Browning6
- Cascade County6
- Chinook6
- Circle6
- Clancy6
- Colstrip6
- Columbus6
- Conrad6
- Craig6
- Crow Agency6
- Dixon6
- East Glacier Park Village6
- East Missoula6
- Ennis6
- Forsyth6
- Fort Belknap Agency6
- Fort Benton6
- Gardiner6
- Geyser6
- Glasgow6
- Hardin6
- Harlowton6
- Helena Valley Northeast6
- Helena Valley Northwest6
- Helena Valley Southeast6
- Helena West Side6
- Hysham6
- Jordan6
- Lame Deer6
- Laurel6
- Lincoln6
- Lolo6
- Malmstrom Air Force Base6
- Malta6
- Manhattan6
- Montana City6
- Philipsburg6
- Potomac6
- Pryor6
- Roundup6
- Rudyard6
- Ryegate6
- Sedan6
- Shepherd6
- South Browning6
- Stanford6
- Stevensville6
- Sula6
- Sun Prairie6
- Three Forks6
- Townsend6
- Troy6
- Victor6
- Virginia City6
- Walkerville6
- West Glacier6
- White Sulphur Springs6
- Whitehall6
- Wilsall6
- Winnett6
- Wisdom6
- Wolf Point6
- Clinton5
- Teton County5
- Alberton4
- Beaverhead County4
- Rosebud County3
- Trout Creek3
- St. Marie2
