Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 15:12, May 06
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?
- Thompson Falls58
- Libby46
- Lewistown44
- Bigfork39
- Darby39
- Helena38
- Chester37
- Frenchtown37
- Browning36
- Martin City36
- Winnett36
- Billings35
- Crow Agency34
- Pryor34
- Shepherd33
- West Glacier33
- Columbia Falls32
- Townsend32
- Colstrip31
- Kalispell31
- Ravalli County31
- Arlee30
- Laurel30
- Noxon30
- Boulder29
- Missoula29
- Wisdom29
- Amsterdam28
- Eureka28
- Lockwood28
- St. Ignatius28
- Walkerville28
- Cut Bank27
- Gardiner27
- Hysham27
- Lame Deer27
- Malta27
- Marion27
- Orchard Homes27
- West Glendive27
- Whitefish27
- Clancy26
- Columbus26
- Helena Valley West Central26
- Lakeside26
- Montana City26
- Plains26
- Polson26
- Stevensville26
- Superior26
- Troy26
- Whitehall26
- Corvallis25
- Craig25
- Geyser25
- Hot Springs25
- Lolo25
- Potomac25
- Ryegate25
- Bozeman24
- Broadus24
- Cascade24
- Deer Lodge24
- Ekalaka24
- Great Falls24
- Heart Butte24
- Sun Prairie24
- Three Forks24
- Absarokee23
- Alberton23
- Belgrade23
- Big Timber23
- Dillon23
- Harlowton23
- Manhattan23
- Miles City23
- Roberts23
- Victor23
- Virginia City23
- White Sulphur Springs23
- Wilsall23
- Big Sky22
- Charlo22
- Clinton22
- East Helena22
- Fort Benton22
- Glasgow22
- Hamilton22
- Lincoln22
- Ravalli22
- Ronan22
- Roundup22
- Seeley Lake22
- Shelby22
- Stanford22
- Birney21
- Coram21
- Ennis21
- Evergreen21
- Helena Valley Northeast21
- Helena Valley Southeast21
- Livingston21
- Malmstrom Air Force Base21
- Polebridge21
- Somers21
- Sula21
- Ulm21
- Anaconda-Deer Lodge County20
- Conrad20
- Rudyard20
- Choteau19
- Philipsburg19
- Red Lodge19
- Baker18
- East Glacier Park Village18
- East Missoula18
- Helena Valley Northwest18
- Helena West Side18
- North Browning18
- South Browning18
- Bonner-West Riverside17
- Dayton17
- Hardin17
- Havre17
- Jordan17
- Terry17
- West Yellowstone17
- Butte16
- Chinook16
- Fort Belknap Agency16
- Pablo15
- Plentywood15
- Scobey15
- Circle14
- Culbertson14
- Froid14
- Wolf Point14
- Four Corners13
- Glendive13
- Richland13
- Sidney13
- Wibaux13
- Big Arm10
- Forsyth2
