Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 02:30, Jul 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?
- Libby125
- Troy122
- Lincoln County117
- Chester103
- Bigfork102
- Cascade County102
- Darby102
- Noxon101
- Stevensville100
- Victor100
- Big Sky99
- Bonner-West Riverside99
- East Missoula99
- Lolo99
- North Browning99
- Orchard Homes99
- Missoula County98
- Philipsburg98
- Wye98
- Beaverhead County97
- Montana City97
- Piltzville97
- Potomac97
- Sula97
- Anaconda-Deer Lodge County96
- Ravalli96
- Woods Bay96
- Charlo95
- Missoula95
- Pablo95
- Wisdom95
- Gardiner94
- Glacier County94
- Lincoln94
- Clinton93
- Helena West Side93
- Lindisfarne93
- St. Ignatius93
- Ulm93
- Walkerville93
- Butte92
- Helena Valley Northwest92
- Teton County92
- Clancy91
- Craig91
- Helena Valley Northeast91
- Helena Valley Southeast91
- Columbia Falls90
- Conrad90
- East Glacier Park Village90
- Fort Benton90
- Lakeside90
- Malmstrom Air Force Base90
- Sun Prairie90
- Arlee89
- Big Arm89
- Geyser89
- Ravalli County89
- Trout Creek89
- Bear Dance88
- Stanford88
- Dayton87
- Four Corners87
- Flathead County86
- Frenchtown86
- Polson86
- Townsend86
- Whitehall86
- Alberton85
- Amsterdam85
- Manhattan85
- Ronan85
- Seeley Lake85
- Three Forks85
- Belgrade84
- Judith Basin County84
- Rudyard84
- Choteau83
- Ennis83
- Somers83
- South Browning83
- Browning82
- Cascade82
- Churchill82
- East Helena82
- Madison County82
- Virginia City82
- White Sulphur Springs82
- Wilsall82
- Boulder81
- Chinook81
- Dillon81
- Eureka81
- Fort Belknap Agency81
- Helena81
- Martin City81
- Big Timber80
- Bozeman80
- Coram80
- Evergreen80
- Kalispell80
- Marion80
- Polebridge80
- Sanders County80
- West Glacier80
- West Yellowstone80
- Cut Bank79
- Dixon79
- Gallatin County79
- Harlowton79
- Helena Valley West Central79
- Columbus78
- Shelby78
- Corvallis77
- Lewis and Clark County77
- Ryegate77
- Colstrip76
- Forsyth76
- Malta76
- Thompson Falls76
- Circle75
- Heart Butte75
- Hysham75
- Miles City75
- Richland75
- Shepherd75
- Terry75
- Toole County75
- Wolf Point75
- Broadus74
- Crow Agency74
- Custer County74
- Froid74
- Glendive74
- Hardin74
- Lake County74
- Lame Deer74
- Lewistown74
- Roundup74
- Glasgow73
- Jordan73
- Pryor73
- Scobey73
- Sidney73
- Winnett73
- Birney72
- Hamilton72
- Livingston72
- Park County72
- Wibaux72
- Great Falls71
- Plentywood71
- Red Lodge71
- Baker70
- Ekalaka70
- Sedan70
- Bridger CDP69
- Havre North67
- Whitefish67
- St. Marie66
- Superior66
- Plains65
- Phillips County64
- Hill County63
- Hot Springs63
- Havre62
- Roosevelt County62
- Laurel61
- Sweet Grass County60
- Big Horn County58
- Culbertson58
- Deer Lodge58
- Park City58
- Stillwater County58
- Absarokee57
- Roberts57
- West Glendive57
- Billings56
- Lockwood56
- Petroleum County54
- Rosebud County41
