Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 11:40, Jun 13
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?
- Lewis and Clark County30
- Butte28
- Boulder25
- Lockwood24
- Missoula24
- Marion23
- Polebridge23
- Dayton22
- Evergreen22
- Somers22
- Big Arm21
- Bigfork21
- Craig21
- Eureka21
- Helena Valley Northeast21
- Helena Valley Northwest21
- Judith Basin County21
- Lewistown21
- Lincoln21
- Polson21
- Charlo20
- Coram20
- Helena West Side20
- Hot Springs20
- Martin City20
- Ravalli20
- Shelby20
- Birney19
- Helena Valley Southeast19
- Arlee18
- East Glacier Park Village18
- Lame Deer18
- Libby18
- Montana City18
- Superior18
- Teton County18
- Wye18
- Bear Dance17
- Bonner-West Riverside17
- Browning17
- Clancy17
- Conrad17
- East Missoula17
- Geyser17
- Lakeside17
- Malmstrom Air Force Base17
- Pablo17
- Plains17
- Potomac17
- South Browning17
- Sun Prairie17
- Townsend17
- West Glendive17
- White Sulphur Springs17
- Wilsall17
- Belgrade16
- Big Horn County16
- Big Timber16
- Broadus16
- Colstrip16
- Crow Agency16
- Darby16
- Fort Benton16
- Helena16
- Lincoln County16
- Manhattan16
- Philipsburg16
- Seeley Lake16
- St. Ignatius16
- Stanford16
- Walkerville16
- Amsterdam15
- Chester15
- Hardin15
- Harlowton15
- Hysham15
- Lake County15
- Winnett15
- Anaconda-Deer Lodge County14
- Cascade County14
- Corvallis14
- Custer County14
- Ekalaka14
- Forsyth14
- Laurel14
- Pryor14
- Roundup14
- Rudyard14
- Ryegate14
- Shepherd14
- Stevensville14
- Thompson Falls14
- Three Forks14
- Columbus13
- Cut Bank13
- Deer Lodge13
- East Helena13
- Noxon13
- Ravalli County13
- Sula13
- Sweet Grass County13
- Victor13
- Whitefish13
- Whitehall13
- Wisdom13
- Bridger CDP12
- Culbertson12
- Gardiner12
- Glacier County12
- Lolo12
- Madison County12
- Miles City12
- Park City12
- Stillwater County12
- Alberton11
- Baker11
- Beaverhead County11
- Chinook11
- Clinton11
- Columbia Falls11
- Fort Belknap Agency11
- Hamilton11
- Helena Valley West Central11
- Cascade10
- Ennis10
- Frenchtown10
- Jordan10
- Orchard Homes10
- Virginia City10
- Woods Bay10
- Billings9
- Choteau9
- Flathead County9
- Four Corners9
- Froid9
- Gallatin County9
- Kalispell9
- Phillips County9
- Richland9
- Sidney9
- West Yellowstone9
- Wibaux9
- Big Sky8
- Dillon8
- Glendive8
- Havre8
- Plentywood8
- Ronan8
- Scobey8
- Terry8
- Absarokee7
- Heart Butte7
- Hill County7
- Malta7
- Missoula County7
- Roosevelt County7
- Sedan7
- Trout Creek7
- Bozeman6
- Churchill6
- Circle6
- Glasgow6
- Great Falls6
- Lindisfarne6
- Piltzville6
- Sanders County6
- St. Marie6
- Troy6
- Wolf Point6
- North Browning5
- Livingston4
- Park County4
- Toole County4
- Dixon3
- Red Lodge3
- Roberts2
- West Glacier2
- Rosebud County1
