Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 03:56, Jun 11
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?
- Lewistown32
- Lewis and Clark County31
- Clinton29
- Lockwood29
- Missoula28
- St. Ignatius27
- Park City23
- Noxon21
- Absarokee20
- Roberts19
- Stillwater County19
- Sweet Grass County17
- Plains16
- Red Lodge16
- Rosebud County16
- Bear Dance15
- Dixon15
- Billings14
- Orchard Homes14
- Dillon13
- Hamilton13
- Helena13
- Lolo13
- Pablo13
- Ravalli County13
- Ronan13
- Scobey13
- East Helena12
- Flathead County12
- Kalispell12
- Lakeside12
- Park County12
- Plentywood12
- West Glacier12
- Arlee11
- Big Arm11
- Boulder11
- Charlo11
- Colstrip11
- Corvallis11
- Darby11
- Dayton11
- Evergreen11
- Glacier County11
- Hot Springs11
- Lake County11
- Lindisfarne11
- Marion11
- Polson11
- Ravalli11
- Sanders County11
- Seeley Lake11
- Somers11
- Superior11
- Wye11
- Choteau10
- Crow Agency10
- East Missoula10
- Forsyth10
- Hardin10
- Heart Butte10
- Lame Deer10
- Shepherd10
- St. Marie10
- West Glendive10
- Alberton9
- Amsterdam9
- Beaverhead County9
- Big Horn County9
- Birney9
- Bonner-West Riverside9
- Bridger CDP9
- Chinook9
- Columbus9
- Culbertson9
- Ekalaka9
- Froid9
- Glasgow9
- Havre9
- Helena Valley West Central9
- Hysham9
- Laurel9
- Libby9
- Livingston9
- Manhattan9
- Missoula County9
- Piltzville9
- Pryor9
- Roundup9
- Ryegate9
- Townsend9
- Whitefish9
- Wolf Point9
- Woods Bay9
- Anaconda-Deer Lodge County8
- Belgrade8
- Big Timber8
- Bigfork8
- Broadus8
- Butte8
- Coram8
- Eureka8
- Fort Belknap Agency8
- Fort Benton8
- Geyser8
- Harlowton8
- Judith Basin County8
- Lincoln County8
- Martin City8
- Philipsburg8
- Polebridge8
- Potomac8
- Richland8
- Rudyard8
- Sidney8
- Stanford8
- Stevensville8
- Sula8
- Thompson Falls8
- Three Forks8
- Victor8
- Wisdom8
- Baker7
- Cascade County7
- Churchill7
- Clancy7
- Columbia Falls7
- Craig7
- Custer County7
- Ennis7
- Gardiner7
- Helena Valley Northeast7
- Helena Valley Northwest7
- Helena Valley Southeast7
- Helena West Side7
- Hill County7
- Lincoln7
- Madison County7
- Malmstrom Air Force Base7
- Malta7
- Miles City7
- Montana City7
- North Browning7
- Sedan7
- Sun Prairie7
- Terry7
- Trout Creek7
- Virginia City7
- Walkerville7
- White Sulphur Springs7
- Whitehall7
- Wibaux7
- Wilsall7
- Winnett7
- Browning6
- Circle6
- Conrad6
- Deer Lodge6
- East Glacier Park Village6
- Frenchtown6
- Glendive6
- Jordan6
- Roosevelt County6
- South Browning6
- Troy6
- West Yellowstone6
- Gallatin County4
- Shelby4
- Big Sky3
- Bozeman3
- Four Corners2
- Great Falls2
- Toole County2
- Ulm2
- Cut Bank1
- Phillips County1
- Teton County1
- Chester0
