Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 10:43, Jun 09
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?
- Crow Agency46
- Lockwood45
- Birney44
- Hardin44
- Lame Deer44
- Lewistown39
- Lewis and Clark County35
- Great Falls34
- Colstrip27
- Missoula27
- Boulder24
- Seeley Lake20
- Helena19
- Roberts19
- Butte18
- Cascade County18
- Columbia Falls18
- East Helena18
- Sweet Grass County18
- Glacier County17
- Helena Valley West Central17
- Hill County17
- Libby17
- Judith Basin County16
- Livingston16
- Park City16
- Absarokee15
- Big Horn County15
- Billings15
- Deer Lodge15
- Shelby14
- Thompson Falls14
- West Glacier14
- Chester13
- Heart Butte13
- Noxon13
- Pablo13
- Park County13
- Ravalli County13
- Sanders County13
- St. Ignatius13
- Stillwater County13
- Alberton12
- Churchill12
- Culbertson12
- Hamilton12
- Hysham12
- Lake County12
- Pryor12
- Clinton11
- Gallatin County11
- Lakeside11
- Missoula County11
- Orchard Homes11
- Piltzville11
- Plains11
- Red Lodge11
- Toole County11
- Ulm11
- West Glendive11
- Arlee10
- Choteau10
- Darby10
- Whitefish10
- Bozeman9
- Cut Bank9
- Lolo9
- Shepherd9
- Big Timber8
- Cascade8
- Columbus8
- Dixon8
- Flathead County8
- Forsyth8
- Fort Benton8
- Geyser8
- Harlowton8
- Laurel8
- Malmstrom Air Force Base8
- Phillips County8
- Ronan8
- Roosevelt County8
- Roundup8
- Ryegate8
- Stanford8
- Sun Prairie8
- West Yellowstone8
- Winnett8
- Baker7
- Big Arm7
- Big Sky7
- Bigfork7
- Broadus7
- Browning7
- Charlo7
- Circle7
- Conrad7
- Coram7
- Custer County7
- Dayton7
- East Glacier Park Village7
- Ekalaka7
- Evergreen7
- Fort Belknap Agency7
- Gardiner7
- Glendive7
- Hot Springs7
- Jordan7
- Madison County7
- Malta7
- Marion7
- Martin City7
- Miles City7
- Polson7
- Ravalli7
- Richland7
- Rudyard7
- Sidney7
- Somers7
- South Browning7
- Terry7
- Teton County7
- Wibaux7
- Wolf Point7
- Amsterdam6
- Anaconda-Deer Lodge County6
- Belgrade6
- Bonner-West Riverside6
- Chinook6
- Clancy6
- Craig6
- Dillon6
- East Missoula6
- Ennis6
- Eureka6
- Frenchtown6
- Froid6
- Glasgow6
- Havre6
- Helena Valley Northeast6
- Helena Valley Northwest6
- Helena Valley Southeast6
- Helena West Side6
- Kalispell6
- Lincoln6
- Lincoln County6
- Manhattan6
- Montana City6
- Philipsburg6
- Plentywood6
- Polebridge6
- Potomac6
- Scobey6
- St. Marie6
- Stevensville6
- Sula6
- Superior6
- Three Forks6
- Townsend6
- Victor6
- Virginia City6
- Walkerville6
- White Sulphur Springs6
- Whitehall6
- Wilsall6
- Wisdom6
- Woods Bay6
- Wye6
- Beaverhead County4
- Four Corners4
- Lindisfarne4
- Rosebud County4
- Troy2
- Bridger CDP1
- Corvallis0
- Trout Creek0
