Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 18:27, 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?
- Havre North179
- Chester171
- Missoula168
- Orchard Homes167
- Havre165
- Hill County164
- Piltzville164
- Frenchtown163
- Cascade County162
- Toole County162
- Clinton160
- Corvallis160
- Montana City160
- Ravalli County160
- Shelby160
- Ulm160
- Arlee159
- Deer Lodge159
- Missoula County159
- Judith Basin County157
- Alberton156
- Darby156
- St. Ignatius156
- Great Falls155
- Heart Butte155
- Seeley Lake155
- Cascade153
- Petroleum County153
- Helena Valley West Central152
- Choteau151
- Hamilton151
- Sula151
- Wisdom150
- Anaconda-Deer Lodge County149
- Philipsburg149
- Victor149
- Stevensville148
- Lincoln147
- Teton County147
- Laurel146
- Potomac146
- Craig145
- Cut Bank145
- East Helena145
- Lewistown145
- Billings144
- Bonner-West Riverside143
- East Missoula143
- Lolo143
- Helena Valley Northwest142
- Helena West Side142
- Lockwood142
- Conrad141
- North Browning141
- Plains141
- Helena140
- Helena Valley Northeast140
- Lewis and Clark County140
- Sun Prairie140
- Walkerville140
- Wye140
- Browning138
- East Glacier Park Village138
- South Browning138
- Boulder137
- Ravalli137
- Helena Valley Southeast136
- Lake County136
- Malmstrom Air Force Base136
- Charlo135
- Clancy134
- Phillips County134
- Dixon133
- Fort Benton133
- Pablo132
- Geyser131
- Polson130
- Big Arm128
- Churchill128
- Gallatin County128
- St. Marie128
- Superior128
- Dayton127
- Dillon127
- Ronan127
- Bozeman126
- Lindisfarne126
- Townsend126
- Whitefish125
- Beaverhead County124
- Hot Springs124
- West Glendive124
- Columbia Falls123
- Somers123
- White Sulphur Springs123
- Bigfork122
- Bear Dance121
- Flathead County121
- Four Corners121
- Lakeside121
- Stanford121
- Whitehall121
- Butte118
- Rudyard118
- Stillwater County117
- Evergreen115
- Glacier County114
- Martin City113
- Three Forks113
- Woods Bay113
- Coram111
- Absarokee109
- Manhattan109
- West Glacier109
- Marion107
- Sedan107
- Amsterdam106
- Harlowton106
- Madison County106
- Virginia City106
- Park County105
- Belgrade104
- Ennis104
- Sweet Grass County104
- Kalispell103
- Ryegate103
- Sanders County103
- Chinook102
- Thompson Falls102
- Winnett101
- Fort Belknap Agency100
- Roundup100
- Bridger CDP99
- Rosebud County99
- Wilsall98
- Livingston97
- Malta95
- Shepherd95
- Roosevelt County94
- Libby92
- Big Timber91
- Jordan91
- Noxon91
- Polebridge91
- Culbertson89
- Roberts89
- Park City87
- Columbus86
- Glasgow86
- Hysham85
- Circle82
- Eureka82
- Hardin82
- Pryor82
- Trout Creek82
- Forsyth80
- Wolf Point80
- Crow Agency79
- Glendive79
- Richland79
- Sidney79
- Terry77
- Colstrip75
- Wibaux75
- Froid74
- Red Lodge74
- West Yellowstone74
- Miles City73
- Scobey73
- Plentywood72
- Lame Deer71
- Birney69
- Custer County69
- Troy68
- Baker67
- Broadus65
- Ekalaka64
- Big Sky63
- Lincoln County63
- Big Horn County60
- Gardiner59
