Air quality in Montana
Air quality index (AQI⁺) and PM2.5 air pollution in Montana • 01:17, Jun 11
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?
- Lewistown32
- Lewis and Clark County31
- Lockwood29
- Missoula28
- Clinton23
- Park City23
- West Glendive22
- Flathead County21
- Hill County21
- Plains21
- Absarokee20
- Roberts19
- Stillwater County19
- West Glacier19
- Boulder18
- Dixon18
- Alberton17
- Deer Lodge17
- Kalispell17
- St. Ignatius17
- Sweet Grass County17
- Lakeside16
- Rosebud County16
- Billings15
- Colstrip15
- Lame Deer15
- Libby15
- Ronan15
- Bear Dance14
- Hamilton14
- Helena14
- Orchard Homes14
- Arlee13
- Dillon13
- Noxon13
- Pablo13
- Sedan13
- Troy13
- Birney12
- Crow Agency12
- East Helena12
- Hardin12
- Laurel12
- Lolo12
- Park County12
- Piltzville12
- Pryor12
- Ravalli County12
- Roundup12
- Sanders County12
- Shepherd12
- Baker11
- Big Sky11
- Columbus11
- Darby11
- Ekalaka11
- Forsyth11
- Hysham11
- Lake County11
- Lincoln County11
- Lindisfarne11
- Ryegate11
- Choteau10
- Heart Butte10
- Missoula County10
- Scobey10
- Wibaux10
- Beaverhead County9
- Big Horn County9
- Big Timber9
- Churchill9
- Circle9
- Culbertson9
- Glasgow9
- Glendive9
- Harlowton9
- Havre9
- Helena Valley West Central9
- Richland9
- Sidney9
- Terry9
- Whitefish9
- Wolf Point9
- Woods Bay9
- Big Arm8
- Bonner-West Riverside8
- Broadus8
- Butte8
- Charlo8
- Chester8
- Chinook8
- Columbia Falls8
- Custer County8
- Dayton8
- East Missoula8
- Froid8
- Geyser8
- Glacier County8
- Hot Springs8
- Judith Basin County8
- Livingston8
- Marion8
- Miles City8
- Philipsburg8
- Plentywood8
- Polson8
- Potomac8
- Ravalli8
- Rudyard8
- Seeley Lake8
- St. Marie8
- Stanford8
- Stevensville8
- Superior8
- Thompson Falls8
- Victor8
- West Yellowstone8
- Wilsall8
- Winnett8
- Wye8
- Amsterdam7
- Anaconda-Deer Lodge County7
- Belgrade7
- Bigfork7
- Bozeman7
- Clancy7
- Coram7
- Craig7
- Ennis7
- Eureka7
- Evergreen7
- Fort Belknap Agency7
- Fort Benton7
- Gardiner7
- Helena Valley Northeast7
- Helena Valley Northwest7
- Helena Valley Southeast7
- Helena West Side7
- Lincoln7
- Madison County7
- Malmstrom Air Force Base7
- Malta7
- Manhattan7
- Martin City7
- Montana City7
- North Browning7
- Polebridge7
- Somers7
- Sula7
- Sun Prairie7
- Three Forks7
- Townsend7
- Ulm7
- Virginia City7
- Walkerville7
- White Sulphur Springs7
- Whitehall7
- Wisdom7
- Browning6
- Conrad6
- East Glacier Park Village6
- Frenchtown6
- Gallatin County6
- Jordan6
- Roosevelt County6
- South Browning6
- Phillips County4
- Shelby4
- Four Corners2
- Great Falls2
- Toole County2
- Trout Creek2
- Bridger CDP1
- Cascade1
- Cascade County1
- Cut Bank1
- Teton County1
- Corvallis0
