Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 03:23, May 31
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?
- Great Falls53
- Judith Basin County46
- Lewis and Clark County34
- Lockwood33
- Cascade County32
- Culbertson27
- Dillon26
- Lewistown26
- Four Corners24
- Teton County24
- Glacier County21
- Noxon21
- Plentywood20
- Scobey20
- Hill County19
- Bridger CDP18
- Butte18
- Froid18
- Missoula18
- Billings17
- Wolf Point17
- Glasgow16
- Richland16
- Sidney16
- Thompson Falls16
- Deer Lodge15
- Libby15
- Philipsburg15
- St. Ignatius15
- West Glacier15
- Circle14
- Corvallis14
- Lakeside14
- Malta14
- Anaconda-Deer Lodge County13
- Birney13
- Chinook13
- Flathead County13
- Fort Belknap Agency13
- Glendive13
- Jordan13
- Plains13
- Superior13
- Wibaux13
- Beaverhead County12
- Bonner-West Riverside12
- Clancy12
- East Missoula12
- Ennis12
- Helena West Side12
- Lincoln County12
- Lolo12
- Montana City12
- Potomac12
- Stevensville12
- Sula12
- Victor12
- Virginia City12
- Walkerville12
- Whitehall12
- Winnett12
- Wisdom12
- Wye12
- Baker11
- Columbia Falls11
- Forsyth11
- Helena Valley Northeast11
- Helena Valley Northwest11
- Helena Valley Southeast11
- Hysham11
- Lame Deer11
- Rudyard11
- Sanders County11
- Terry11
- Colstrip10
- Custer County10
- Ekalaka10
- Hardin10
- Miles City10
- Townsend10
- Arlee9
- Big Horn County9
- Broadus9
- Craig9
- Crow Agency9
- Lincoln9
- Roundup9
- Shelby9
- Shepherd9
- Three Forks9
- Trout Creek9
- Troy9
- Amsterdam8
- Belgrade8
- Eureka8
- Fort Benton8
- Geyser8
- Hot Springs8
- Lake County8
- Manhattan8
- Missoula County8
- Pryor8
- Ravalli8
- Sedan8
- St. Marie8
- Stanford8
- White Sulphur Springs8
- Gardiner7
- Harlowton7
- Heart Butte7
- Laurel7
- Malmstrom Air Force Base7
- Pablo7
- Polebridge7
- Ryegate7
- Sun Prairie7
- West Yellowstone7
- Wilsall7
- Alberton6
- Big Arm6
- Big Sky6
- Big Timber6
- Browning6
- Charlo6
- Choteau6
- Columbus6
- Conrad6
- Coram6
- Dayton6
- East Glacier Park Village6
- Evergreen6
- Marion6
- Martin City6
- Park City6
- Polson6
- Ronan6
- Seeley Lake6
- Somers6
- South Browning6
- Boulder5
- Frenchtown5
- Whitefish5
- Cascade4
- Cut Bank4
- East Helena4
- Helena4
- Kalispell4
- Phillips County4
- Piltzville4
- Ulm4
- Bear Dance3
- Orchard Homes3
- Ravalli County3
- Roberts3
- Rosebud County3
- Absarokee2
- Bigfork2
- Darby2
- Gallatin County2
- Hamilton2
- Madison County2
- North Browning2
- Red Lodge2
- Stillwater County2
- West Glendive2
- Woods Bay2
- Bozeman1
- Chester1
- Havre1
- Helena Valley West Central1
- Livingston1
- Park County1
- Roosevelt County1
- Toole County1
- Clinton0
- Lindisfarne0
- Sweet Grass County0
