Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 04:51, Jun 10
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?
- Missoula County76
- Lewis and Clark County33
- Lockwood32
- Missoula27
- Lewistown23
- Noxon22
- St. Ignatius22
- Chester20
- Butte19
- Flathead County19
- West Glacier19
- Cascade17
- Corvallis17
- Pablo17
- Lake County16
- Seeley Lake16
- Thompson Falls16
- Heart Butte15
- Arlee14
- Big Horn County14
- Choteau14
- Culbertson14
- Teton County14
- Billings13
- East Helena13
- Helena13
- Plains13
- Shelby13
- West Glendive13
- Four Corners12
- Havre12
- Lindisfarne12
- Ronan12
- Bridger CDP11
- Ravalli County11
- Toole County11
- Woods Bay11
- Absarokee10
- Orchard Homes10
- Roosevelt County10
- Sanders County10
- Alberton9
- Anaconda-Deer Lodge County9
- Beaverhead County9
- Big Arm9
- Bonner-West Riverside9
- Boulder9
- Broadus9
- Charlo9
- Churchill9
- Dayton9
- East Missoula9
- Ekalaka9
- Glacier County9
- Great Falls9
- Hamilton9
- Hot Springs9
- Livingston9
- Madison County9
- Marion9
- Park City9
- Philipsburg9
- Piltzville9
- Polson9
- Potomac9
- Ravalli9
- St. Marie9
- Stevensville9
- Sula9
- Superior9
- Trout Creek9
- Victor9
- West Yellowstone9
- Wisdom9
- Wye9
- Big Sky8
- Bigfork8
- Birney8
- Bozeman8
- Cut Bank8
- Dixon8
- Eureka8
- Evergreen8
- Gallatin County8
- Gardiner8
- Helena Valley West Central8
- Hill County8
- Lakeside8
- Phillips County8
- Plentywood8
- Roberts8
- Somers8
- Stillwater County8
- Whitefish8
- Bear Dance7
- Coram7
- East Glacier Park Village7
- Ennis7
- Froid7
- Glendive7
- Judith Basin County7
- Libby7
- Lincoln County7
- Martin City7
- Polebridge7
- Richland7
- Scobey7
- Sidney7
- Sweet Grass County7
- Ulm7
- Virginia City7
- Walkerville7
- Whitehall7
- Wibaux7
- Wolf Point7
- Amsterdam6
- Baker6
- Belgrade6
- Big Timber6
- Browning6
- Cascade County6
- Chinook6
- Circle6
- Clancy6
- Clinton6
- Colstrip6
- Columbia Falls6
- Columbus6
- Conrad6
- Craig6
- Crow Agency6
- Custer County6
- Darby6
- Deer Lodge6
- Forsyth6
- Fort Belknap Agency6
- Fort Benton6
- Geyser6
- Glasgow6
- Hardin6
- Harlowton6
- Helena Valley Northeast6
- Helena Valley Northwest6
- Helena Valley Southeast6
- Helena West Side6
- Hysham6
- Jordan6
- Kalispell6
- Lame Deer6
- Laurel6
- Lincoln6
- Malmstrom Air Force Base6
- Malta6
- Manhattan6
- Miles City6
- Montana City6
- North Browning6
- Pryor6
- Roundup6
- Rudyard6
- Ryegate6
- Shepherd6
- South Browning6
- Stanford6
- Sun Prairie6
- Terry6
- Three Forks6
- Townsend6
- White Sulphur Springs6
- Wilsall6
- Winnett6
- Troy5
- Frenchtown4
- Dillon2
- Park County2
- Sedan2
- Lolo1
- Rosebud County0
