Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 06:00, 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
- Lincoln County119
- Noxon113
- Troy111
- Trout Creek108
- Chester103
- Darby101
- Stevensville100
- Victor100
- Sula99
- Lolo98
- Bigfork97
- Cascade County97
- Montana City97
- Orchard Homes97
- Ravalli County97
- Clancy96
- Flathead County96
- Teton County96
- Anaconda-Deer Lodge County95
- Bonner-West Riverside95
- Conrad95
- East Missoula95
- Helena West Side95
- Philipsburg95
- Walkerville95
- Wisdom95
- Wye95
- Helena Valley Northeast94
- Helena Valley Northwest94
- Helena Valley Southeast94
- Missoula County94
- Whitehall94
- Butte92
- Craig92
- East Glacier Park Village92
- Potomac92
- Sun Prairie92
- Townsend92
- Big Sky91
- Gardiner91
- Lincoln91
- Malmstrom Air Force Base91
- North Browning91
- Fort Benton90
- Four Corners90
- Ravalli90
- Geyser89
- Hamilton89
- Charlo88
- Corvallis88
- Cut Bank88
- Lewistown88
- Pablo88
- South Browning88
- Whitefish88
- Browning87
- Columbia Falls87
- Glacier County86
- Missoula86
- Piltzville86
- Shelby86
- Stanford86
- Thompson Falls86
- Three Forks85
- White Sulphur Springs85
- Beaverhead County84
- St. Ignatius84
- Toole County84
- Amsterdam83
- Belgrade83
- Big Arm83
- Manhattan83
- Dayton82
- Eureka82
- Seeley Lake82
- Somers82
- Boulder81
- Choteau81
- Clinton81
- Coram81
- East Helena81
- Ennis81
- Kalispell81
- Madison County81
- Martin City81
- Wilsall81
- Arlee80
- Evergreen80
- Rudyard80
- Sanders County80
- Virginia City80
- West Glacier80
- Woods Bay80
- Alberton79
- Bear Dance79
- Dillon79
- Great Falls79
- Judith Basin County79
- Lakeside79
- Marion79
- Polebridge79
- Big Timber78
- Gallatin County78
- Harlowton78
- Ulm78
- West Yellowstone78
- Columbus77
- Helena77
- Red Lodge76
- Ryegate76
- Shepherd76
- Bridger CDP75
- Chinook75
- Park County75
- Pryor75
- Sweet Grass County75
- Bozeman74
- Circle74
- Forsyth74
- Fort Belknap Agency74
- Glendive74
- Hot Springs74
- Hysham74
- Lindisfarne74
- Livingston74
- Miles City74
- Richland74
- Roundup74
- Terry74
- Wolf Point74
- Churchill73
- Colstrip73
- Custer County73
- Glasgow73
- Hardin73
- Jordan73
- Scobey73
- Birney72
- Crow Agency72
- Froid72
- Heart Butte72
- Lame Deer72
- Malta72
- Broadus71
- Sidney71
- Winnett71
- Frenchtown70
- Plentywood70
- Polson70
- Superior70
- Plains69
- Wibaux69
- Helena Valley West Central67
- Sedan67
- Cascade66
- Lake County65
- Baker64
- Ekalaka64
- Laurel64
- Havre North62
- Absarokee61
- Culbertson61
- Dixon61
- St. Marie61
- Big Horn County60
- Park City60
- Roberts60
- Roosevelt County60
- Stillwater County60
- Deer Lodge59
- Hill County59
- Lewis and Clark County58
- Ronan58
- West Glendive58
- Havre57
- Billings54
- Petroleum County54
- Lockwood53
- Phillips County47
- Rosebud County47
