Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 16:40, May 21
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 Falls40
- Lewistown38
- Missoula37
- Lewis and Clark County34
- Libby34
- Whitefish31
- Kalispell30
- Lockwood29
- Lolo28
- Boulder27
- Alberton26
- Cut Bank26
- Plains26
- Wye26
- Butte25
- Deer Lodge25
- Flathead County25
- Lincoln County25
- Phillips County25
- Shelby25
- St. Ignatius25
- Chester24
- Clinton24
- Darby24
- Dillon24
- Frenchtown24
- Lake County24
- Orchard Homes24
- Seeley Lake24
- West Glendive24
- Arlee23
- Columbia Falls23
- East Helena23
- Helena23
- Missoula County23
- Noxon23
- Piltzville23
- Bozeman22
- Churchill22
- Eureka22
- Thompson Falls22
- Troy22
- Cascade21
- Cascade County21
- Choteau21
- Glacier County21
- Heart Butte21
- Judith Basin County21
- Ravalli County21
- Trout Creek21
- Bigfork20
- Ronan20
- Gallatin County19
- Helena Valley West Central19
- North Browning19
- Dixon18
- Hamilton18
- Havre18
- Hill County18
- Roosevelt County18
- Sedan18
- West Glacier18
- Beaverhead County17
- Madison County17
- Sidney17
- Toole County17
- Birney16
- Bonner-West Riverside16
- Colstrip16
- Conrad16
- East Missoula16
- Fort Benton16
- Hot Springs16
- Lame Deer16
- Malmstrom Air Force Base16
- Marion16
- Plentywood16
- Polebridge16
- Ravalli16
- Rudyard16
- St. Marie16
- Stevensville16
- Sun Prairie16
- Superior16
- Ulm16
- Victor16
- Charlo15
- Coram15
- Culbertson15
- Froid15
- Martin City15
- Bear Dance14
- Billings14
- Four Corners14
- Lakeside14
- Lindisfarne14
- Evergreen13
- Park County13
- Richland13
- Stillwater County13
- Wisdom13
- Woods Bay13
- Baker12
- Big Arm12
- Broadus12
- Browning12
- Chinook12
- Crow Agency12
- Dayton12
- East Glacier Park Village12
- Ekalaka12
- Fort Belknap Agency12
- Geyser12
- Glendive12
- Harlowton12
- Livingston12
- Pablo12
- Potomac12
- Red Lodge12
- Scobey12
- Somers12
- South Browning12
- Stanford12
- Sula12
- Sweet Grass County12
- Wibaux12
- Amsterdam11
- Anaconda-Deer Lodge County11
- Belgrade11
- Clancy11
- Corvallis11
- Craig11
- Ennis11
- Helena Valley Northeast11
- Helena Valley Northwest11
- Helena Valley Southeast11
- Helena West Side11
- Lincoln11
- Malta11
- Manhattan11
- Montana City11
- Philipsburg11
- Ryegate11
- Three Forks11
- Townsend11
- Virginia City11
- Walkerville11
- White Sulphur Springs11
- Whitehall11
- Wilsall11
- Absarokee9
- Bridger CDP9
- Circle9
- Forsyth9
- Hardin9
- Hysham9
- Miles City9
- Pryor9
- Roundup9
- Shepherd9
- Terry9
- Winnett9
- Glasgow8
- Laurel8
- Roberts8
- Teton County8
- Wolf Point8
- Big Sky7
- Big Timber7
- Columbus6
- Gardiner6
- Jordan6
- West Yellowstone6
- Custer County2
- Rosebud County1
