Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 01:57, May 23
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?
- Hamilton52
- Billings48
- Darby40
- Deer Lodge37
- Bear Dance36
- Missoula County36
- Plains33
- Lolo32
- Pablo32
- Woods Bay32
- Lakeside31
- Boulder30
- Gardiner30
- Flathead County29
- Lewis and Clark County29
- Lockwood29
- Park City29
- Helena Valley West Central28
- Roosevelt County28
- Troy28
- West Glacier28
- Alberton27
- Butte27
- Lewistown27
- Livingston25
- Missoula25
- Big Horn County24
- East Helena24
- Noxon24
- Helena23
- Judith Basin County23
- Orchard Homes23
- Seeley Lake23
- Stillwater County23
- Arlee22
- Chester22
- Culbertson22
- Dillon22
- Great Falls22
- Lake County22
- Cascade County21
- Churchill21
- Clinton21
- Gallatin County21
- Piltzville21
- Ravalli County21
- Sanders County21
- St. Ignatius21
- Sweet Grass County21
- Toole County21
- Wye21
- Bozeman20
- Whitefish20
- Corvallis19
- Dixon19
- Kalispell19
- Madison County19
- Roberts19
- Absarokee18
- Bonner-West Riverside18
- Charlo18
- East Missoula18
- Glasgow18
- Hot Springs18
- Libby18
- Miles City18
- Potomac18
- Ravalli18
- Superior18
- Terry18
- Thompson Falls18
- Baker17
- Big Arm17
- Bigfork17
- Birney17
- Cascade17
- Colstrip17
- Forsyth17
- Havre17
- Lame Deer17
- Park County17
- Polson17
- Sedan17
- Sidney17
- Browning16
- Clancy16
- Coram16
- Craig16
- Dayton16
- East Glacier Park Village16
- Ekalaka16
- Eureka16
- Evergreen16
- Frenchtown16
- Glendive16
- Helena Valley Northeast16
- Helena Valley Northwest16
- Helena Valley Southeast16
- Helena West Side16
- Lincoln16
- Marion16
- Martin City16
- Montana City16
- Polebridge16
- Somers16
- South Browning16
- St. Marie16
- Sun Prairie16
- Townsend16
- Ulm16
- Wibaux16
- Conrad15
- Lindisfarne15
- Malmstrom Air Force Base15
- Stevensville15
- Three Forks15
- Big Sky14
- Broadus14
- Chinook14
- Choteau14
- Fort Belknap Agency14
- Fort Benton14
- Geyser14
- Glacier County14
- Manhattan14
- Ronan14
- Rudyard14
- Stanford14
- Trout Creek14
- Whitehall14
- Wolf Point14
- Amsterdam13
- Belgrade13
- Big Timber13
- Circle13
- Columbus13
- Crow Agency13
- Froid13
- Hardin13
- Harlowton13
- Hysham13
- Jordan13
- Laurel13
- Malta13
- Plentywood13
- Pryor13
- Red Lodge13
- Richland13
- Roundup13
- Ryegate13
- Scobey13
- Shelby13
- Shepherd13
- Victor13
- West Yellowstone13
- Wilsall13
- Winnett13
- Cut Bank12
- Heart Butte12
- Lincoln County12
- Phillips County12
- Teton County12
- West Glendive12
- Anaconda-Deer Lodge County11
- Bridger CDP11
- Philipsburg11
- Sula11
- Walkerville11
- White Sulphur Springs11
- Wisdom11
- Ennis10
- Virginia City10
- Four Corners9
- Columbia Falls7
- Custer County7
- North Browning7
