Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 11:34, 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
- Birney44
- Hardin44
- Lame Deer44
- Lewistown39
- Lewis and Clark County35
- Great Falls34
- Boulder27
- Colstrip27
- Missoula27
- Culbertson21
- East Helena21
- Lockwood20
- Helena19
- Butte18
- Cascade County18
- Hill County17
- Red Lodge17
- Seeley Lake17
- St. Ignatius17
- Absarokee16
- Billings16
- Chester16
- Deer Lodge16
- Dillon16
- Heart Butte16
- Helena Valley West Central16
- Livingston16
- Park City16
- Roberts16
- Shelby16
- Big Horn County15
- Park County15
- West Glendive15
- Arlee14
- Churchill14
- Judith Basin County14
- Pablo14
- Stillwater County14
- Cut Bank13
- Glacier County13
- Ravalli County13
- Roosevelt County13
- Sanders County13
- Sweet Grass County13
- Toole County13
- Bozeman12
- Gallatin County12
- Hysham12
- Lolo12
- Missoula County12
- Orchard Homes12
- Pryor12
- Clinton11
- Hamilton11
- Kalispell11
- Piltzville11
- Ulm11
- Choteau10
- Darby10
- Lake County10
- Plains10
- Big Sky9
- Dixon9
- Madison County9
- Ronan9
- Shepherd9
- Big Timber8
- Cascade8
- Columbus8
- Flathead County8
- Forsyth8
- Fort Benton8
- Geyser8
- Harlowton8
- Havre8
- Laurel8
- Libby8
- Malmstrom Air Force Base8
- Roundup8
- Ryegate8
- Stanford8
- Sun Prairie8
- West Glacier8
- West Yellowstone8
- Whitefish8
- Winnett8
- Baker7
- Big Arm7
- Bigfork7
- Broadus7
- Browning7
- Charlo7
- Circle7
- Conrad7
- Coram7
- Custer County7
- Dayton7
- East Glacier Park Village7
- Ekalaka7
- Evergreen7
- Fort Belknap Agency7
- Frenchtown7
- Gardiner7
- Glendive7
- Hot Springs7
- Jordan7
- Lakeside7
- Malta7
- Marion7
- Martin City7
- Miles City7
- Polson7
- Ravalli7
- Richland7
- Rudyard7
- Sidney7
- Somers7
- South Browning7
- Terry7
- Teton County7
- Thompson Falls7
- Wibaux7
- Wolf Point7
- Alberton6
- Amsterdam6
- Anaconda-Deer Lodge County6
- Belgrade6
- Bonner-West Riverside6
- Chinook6
- Clancy6
- Columbia Falls6
- Craig6
- East Missoula6
- Ennis6
- Eureka6
- Four Corners6
- Froid6
- Glasgow6
- Helena Valley Northeast6
- Helena Valley Northwest6
- Helena Valley Southeast6
- Helena West Side6
- Lincoln6
- Lincoln County6
- Manhattan6
- Montana City6
- Noxon6
- Philipsburg6
- Plentywood6
- Polebridge6
- Potomac6
- Rosebud County6
- Scobey6
- St. Marie6
- Stevensville6
- Sula6
- Superior6
- Three Forks6
- Townsend6
- Victor6
- Virginia City6
- Walkerville6
- White Sulphur Springs6
- Whitehall6
- Wilsall6
- Wisdom6
- Wye6
- Beaverhead County4
- Lindisfarne4
- Phillips County4
- Woods Bay4
- Troy2
- Bridger CDP0
- Corvallis0
- Trout Creek0
