Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 05:09, Jul 27
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?
- Phillips County193
- Havre North182
- Havre177
- West Glendive170
- Clinton168
- Cascade County165
- Choteau164
- Montana City163
- Deer Lodge159
- Ulm158
- Helena157
- Boulder156
- East Helena155
- Judith Basin County155
- Cascade154
- Darby154
- Helena Valley West Central154
- Seeley Lake153
- Hill County152
- Shelby152
- Missoula County151
- Chester148
- Corvallis148
- Cut Bank146
- Toole County146
- Beaverhead County144
- Ravalli County144
- Lewis and Clark County141
- Petroleum County139
- Piltzville138
- North Browning137
- Pablo135
- Alberton132
- Hamilton131
- Arlee130
- Lewistown130
- Heart Butte129
- Missoula129
- Frenchtown126
- Great Falls124
- Orchard Homes124
- Bonner-West Riverside120
- East Missoula120
- Lolo120
- St. Ignatius120
- Stevensville120
- Victor120
- Wye120
- Potomac119
- Glacier County117
- Ravalli117
- Butte114
- Charlo114
- Bear Dance111
- Superior111
- Rudyard109
- Teton County108
- Conrad107
- Fort Benton107
- Sula107
- Sun Prairie107
- Chinook105
- Lincoln105
- Malmstrom Air Force Base105
- Philipsburg105
- Big Arm104
- Craig104
- Dixon104
- Dayton101
- Lake County101
- Plains100
- Fort Belknap Agency99
- Helena Valley Northwest98
- Anaconda-Deer Lodge County97
- Polson97
- Bigfork96
- Helena Valley Northeast96
- Helena West Side96
- Sanders County96
- Malta95
- Somers95
- East Glacier Park Village94
- Geyser94
- Hot Springs94
- St. Marie94
- Browning93
- Helena Valley Southeast93
- Marion93
- South Browning93
- Thompson Falls93
- Trout Creek93
- Circle92
- Glasgow92
- Wisdom92
- Lindisfarne91
- Evergreen90
- Richland90
- Roosevelt County90
- Sidney90
- Walkerville90
- Wolf Point90
- Clancy89
- Glendive89
- Jordan89
- Martin City87
- Stanford87
- Coram86
- Froid86
- Wibaux86
- Terry85
- West Glacier85
- Libby84
- Scobey83
- Troy83
- Culbertson82
- Ronan82
- Baker81
- Winnett81
- Plentywood79
- Miles City78
- Whitefish78
- Custer County77
- Noxon77
- Townsend77
- Woods Bay77
- Flathead County76
- Whitehall76
- Ekalaka75
- Forsyth75
- Polebridge75
- White Sulphur Springs75
- Hysham74
- Colstrip73
- Lakeside73
- Columbia Falls72
- Kalispell71
- Roundup71
- Rosebud County70
- Broadus69
- Harlowton69
- Lame Deer68
- Ryegate68
- Eureka67
- Three Forks67
- Birney64
- Manhattan63
- Shepherd62
- Amsterdam61
- Wilsall61
- Belgrade60
- Hardin60
- Virginia City60
- Crow Agency58
- Ennis58
- Big Timber55
- Columbus54
- Pryor54
- Laurel52
- Lincoln County52
- Absarokee51
- West Yellowstone48
- Lockwood46
- Billings44
- Dillon44
- Red Lodge44
- Park City36
- Gardiner34
- Stillwater County33
- Park County32
- Sweet Grass County29
- Bozeman27
- Roberts27
- Churchill26
- Big Horn County24
- Gallatin County24
- Madison County24
- Sedan24
- Big Sky23
- Livingston22
- Four Corners20
- Bridger CDP14
