Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 06:50, Jul 25
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?
- Hill County128
- Arlee114
- Phillips County114
- Troy112
- Cascade County110
- Lincoln County110
- St. Marie110
- Chester108
- Pablo107
- Roosevelt County107
- Culbertson104
- Noxon103
- Missoula County102
- Havre North101
- Ronan100
- Lake County97
- Libby96
- St. Ignatius95
- Ulm94
- Chinook92
- Rudyard92
- Columbia Falls91
- Flathead County91
- Lakeside91
- Bear Dance90
- Bigfork90
- Fort Belknap Agency90
- Great Falls90
- Judith Basin County90
- Whitefish90
- Eureka89
- Plains89
- Polson89
- Hot Springs88
- Lindisfarne88
- Piltzville88
- Scobey88
- Malta87
- Polebridge86
- Choteau85
- Plentywood85
- Woods Bay85
- Glasgow84
- Missoula84
- Cascade83
- Glacier County83
- Toole County83
- Winnett83
- Wolf Point83
- Coram82
- Dixon82
- Fort Benton82
- Kalispell82
- Marion82
- Sanders County82
- Seeley Lake82
- West Glacier82
- Browning81
- Evergreen81
- Jordan81
- Martin City81
- South Browning81
- Thompson Falls81
- Circle80
- Conrad80
- East Glacier Park Village80
- Froid80
- Stanford80
- Geyser79
- Malmstrom Air Force Base79
- Petroleum County79
- Somers79
- Big Arm78
- Dayton78
- Sun Prairie78
- Superior78
- Four Corners77
- Charlo76
- Darby76
- Ravalli76
- Richland76
- Bonner-West Riverside75
- Clinton75
- Craig75
- East Missoula75
- Heart Butte75
- Helena Valley Northeast75
- Lolo75
- Wye75
- Helena Valley Northwest74
- Helena Valley Southeast74
- Helena West Side74
- Lincoln74
- Potomac74
- Stevensville74
- Havre73
- Victor73
- White Sulphur Springs73
- Alberton72
- Clancy72
- Corvallis72
- Sidney72
- Cut Bank71
- Lewistown71
- Deer Lodge70
- Frenchtown70
- Orchard Homes70
- Philipsburg70
- Ravalli County70
- Townsend70
- Harlowton69
- Montana City69
- North Browning69
- Roundup69
- Trout Creek69
- West Glendive69
- Glendive67
- Hamilton67
- Ryegate67
- East Helena66
- Helena66
- Shelby66
- Terry66
- Churchill64
- Hysham64
- Boulder63
- Bozeman63
- Forsyth63
- Gallatin County62
- Lewis and Clark County62
- Helena Valley West Central61
- Miles City61
- Rosebud County61
- Wibaux61
- Anaconda-Deer Lodge County60
- Baker60
- Lockwood60
- Custer County59
- Laurel59
- Walkerville59
- Billings58
- Colstrip58
- Stillwater County58
- Wilsall58
- Ekalaka57
- Livingston57
- Shepherd57
- Sula57
- Three Forks57
- Whitehall57
- Gardiner56
- Lame Deer56
- Manhattan56
- Sweet Grass County56
- Wisdom56
- Amsterdam55
- Beaverhead County55
- Belgrade55
- Birney55
- Bridger CDP55
- Broadus55
- Crow Agency55
- Dillon55
- Ennis55
- Hardin55
- Madison County55
- Park County55
- Roberts55
- Sedan55
- Virginia City55
- Big Timber54
- Big Sky53
- Butte53
- Columbus53
- Pryor53
- West Yellowstone53
- Absarokee52
- Big Horn County52
- Teton County43
- Red Lodge41
- Park City37
