Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 07:49, May 24
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?
- Frenchtown56
- Pablo55
- Culbertson53
- West Yellowstone49
- Ennis48
- Amsterdam47
- Belgrade47
- Virginia City47
- Wilsall47
- Big Timber46
- Harlowton44
- Manhattan44
- Three Forks41
- Columbia Falls39
- Troy38
- Alberton37
- Seeley Lake37
- Bear Dance33
- Helena Valley West Central32
- West Glacier32
- Glacier County31
- Billings30
- Great Falls30
- Ryegate29
- Helena27
- North Browning27
- Thompson Falls27
- Bigfork26
- Heart Butte25
- Lewistown25
- Noxon25
- Cascade County24
- Dixon24
- Kalispell24
- Lake County24
- Lakeside24
- Plains24
- Ravalli County24
- Sanders County24
- Woods Bay24
- Wye24
- Cascade23
- Cut Bank23
- Hamilton23
- Lewis and Clark County23
- Piltzville23
- Shelby23
- Whitefish23
- Deer Lodge22
- East Helena22
- Libby22
- Boulder21
- Darby21
- Flathead County21
- Judith Basin County21
- Lolo21
- Missoula21
- Roosevelt County21
- Sweet Grass County21
- Arlee20
- Clinton20
- Livingston20
- Chester19
- Lincoln County19
- Orchard Homes19
- St. Ignatius19
- Trout Creek19
- Butte18
- Gallatin County18
- Lockwood18
- Ronan18
- Ulm18
- Big Horn County17
- Bozeman17
- Choteau17
- Gardiner17
- Lindisfarne17
- Madison County17
- Park City17
- St. Marie17
- Whitehall17
- Corvallis16
- Hill County16
- Missoula County16
- Red Lodge16
- Townsend16
- White Sulphur Springs16
- Churchill15
- Dillon15
- Phillips County15
- Big Arm14
- Bonner-West Riverside14
- Browning14
- Charlo14
- Clancy14
- Columbus14
- Conrad14
- Coram14
- Dayton14
- East Glacier Park Village14
- East Missoula14
- Eureka14
- Evergreen14
- Fort Belknap Agency14
- Geyser14
- Havre14
- Helena Valley Southeast14
- Hot Springs14
- Lincoln14
- Malmstrom Air Force Base14
- Malta14
- Marion14
- Martin City14
- Montana City14
- Polebridge14
- Polson14
- Potomac14
- Ravalli14
- Somers14
- South Browning14
- Stanford14
- Sun Prairie14
- Superior14
- Toole County14
- West Glendive14
- Chinook13
- Craig13
- Fort Benton13
- Helena Valley Northeast13
- Helena Valley Northwest13
- Helena West Side13
- Park County13
- Rudyard13
- Sedan13
- Stevensville13
- Victor13
- Absarokee12
- Big Sky12
- Roundup12
- Walkerville12
- Laurel11
- Philipsburg11
- Stillwater County11
- Winnett11
- Anaconda-Deer Lodge County10
- Baker10
- Birney10
- Bridger CDP10
- Broadus10
- Circle10
- Colstrip10
- Crow Agency10
- Custer County10
- Ekalaka10
- Forsyth10
- Glasgow10
- Glendive10
- Hardin10
- Hysham10
- Jordan10
- Lame Deer10
- Miles City10
- Pryor10
- Shepherd10
- Sula10
- Terry10
- Wisdom10
- Roberts9
- Wibaux9
- Wolf Point9
- Four Corners8
- Froid8
- Richland8
- Scobey8
- Sidney8
- Plentywood7
- Rosebud County7
- Teton County4
- Beaverhead County2
