UV Index Today in Montana (MT) Tuesday, October 13, 2026 -3:22 PM MDT (GMT-6) The average maximum UV Index today across 152 locations in Montana (MT) , is 3.3. The highest projected maximum is 5 in Dillon at 1:00 PM MDT, while the lowest projected maximum is 0.4 in Baker at 11:00 AM MDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 3.2. The highest projected maximum is 4.6 in Belgrade at 1:00 PM MDT, and the lowest projected maximum is 1.5 in Thompson Falls at 1:00 PM MDT.
55 Counties in Montana (MT) Average Maximum UV Index Today
Beaverhead County - 5
Big Horn County - 2.3
Blaine County - 3.1
Broadwater County - 3.4
Carbon County - 3.4
Carter County - 1.1
Cascade County - 3.9
Chouteau County - 3.2
Custer County - 2.6
Daniels County - 2.8
Dawson County - 2.9
Deer Lodge County - 3.9
Fallon County - 0.4
Fergus County - 3.6
Flathead County - 3
Gallatin County - 3.6
Garfield County - 3.1
Glacier County - 3.6
Golden Valley County - 3.5
Granite County - 3.6
Hill County - 2.9
Jefferson County - 3.5
Judith Basin County - 3.9
Lake County - 3.1
Lewis and Clark County - 3.3
Liberty County - 2.9
Lincoln County - 2.7
McCone County - 3
Madison County - 4
Meagher County - 3.8
Mineral County - 3.3
Missoula County - 3.3
Musselshell County - 3.2
Park County - 3.7
Phillips County - 3.3
Pondera County - 3.7
Powder River County - 1.6
Powell County - 3.6
Prairie County - 2.7
Ravalli County - 3.4
Richland County - 2.5
Roosevelt County - 2.8
Rosebud County - 2.1
Sanders County - 3.1
Sheridan County - 2.5
Silver Bow County - 3.8
Stillwater County - 3.4
Sweet Grass County - 3.2
Teton County - 3.9
Toole County - 2.9
Treasure County - 3.3
Valley County - 2.9
Wheatland County - 4.3
Wibaux County - 3.1
Yellowstone County - 3.3152 Places in Montana (MT) Maximum UV Index Today
Absarokee - 3.5
Alberton - 3.3
Arlee - 3.2
Ashland - 1
Baker - 0.4
Batavia - 2.9
Belgrade - 3.7
Belt - 4.1
Bigfork - 3.1
Big Sandy - 2.9
Big Sky - 4.2
Big Timber - 3.2
Billings - 3.3
Black Eagle - 3.9
Bonner-West Riverside - 3.3
Boulder - 3.8
Bozeman - 2.6
Bridger - 3.4
Browning - 3.8
Busby - 2
Carlton - 3.3
Cascade - 3.5
Chester - 2.9
Chinook - 2.9
Choteau - 3.9
Churchill - 3.7
Circle - 3
Clancy - 3.3
Clinton - 3.5
Colstrip - 3.3
Columbia Falls - 3
Columbus - 3.4
Conrad - 3.8
Corvallis - 3.5
Crow Agency - 3.2
Culbertson - 2.7
Cut Bank - 2.9
Darby - 3.6
Deer Lodge - 3.9
Dillon - 5
East Helena - 3.3
East Missoula - 3.3
Ennis - 3.8
Eureka - 2.6
Evergreen - 3
Fairfield - 3.9
Fairview - 2.5
Florence - 3.3
Forsyth - 3.2
Fort Belknap Agency - 2.9
Fort Benton - 3.8
Four Corners - 3.7
Frenchtown - 3.3
Gallatin Gateway - 3.4
Gardiner - 4
Glasgow - 2.9
Glendive - 2.9
Great Falls - 3.9
Hamilton - 3.5
Hardin - 3.4
Harlem - 2.9
Harlowton - 4.3
Havre - 2.9
Havre North - 2.9
Hays - 3.7
Heart Butte - 3.7
Helena - 3.3
Helena Flats - 3
Helena Valley Northeast - 3.4
Helena Valley Northwest - 3.4
Helena Valley Southeast - 3.3
Helena Valley West Central - 3.4
Helena West Side - 3.3
Hot Springs - 3.1
Hungry Horse - 3
Jefferson City - 3.3
Joliet - 3.4
Kalispell - 3
King Arthur Park - 3.7
Lakeside - 3
Lame Deer - 1.5
Laurel - 3.3
Lewistown - 3.6
Libby - 2.7
Lincoln - 3.5
Lindisfarne - 3.1
Livingston - 3.5
Lockwood - 3.3
Lolo - 3.3
Malmstrom AFB - 3.9
Malta - 2.9
Manhattan - 3.7
Marion - 3
Miles City - 2.6
Missoula - 3.3
Montana City - 3.3
Muddy - 1.6
North Browning - 3.8
Orchard Homes - 3.3
Pablo - 3.2
Park City - 3.4
Philipsburg - 3.6
Pinesdale - 3.5
Pioneer Junction - 2.9
Plains - 3.1
Plentywood - 2.5
Polson - 3.1
Ponderosa Pines - 3
Poplar - 2.9
Pray - 3.7
Red Lodge - 3.4
Riverbend - 3.3
Rocky Boy West - 2.9
Ronan - 3.2
Roundup - 3.2
St. Ignatius - 3.2
Scobey - 2.8
Seeley Lake - 3.3
Shelby - 2.9
Sheridan - 3.9
Sidney - 2.6
Somers - 3
South Browning - 3.8
South Hills - 3.3
Spokane Creek - 3.3
Stevensville - 3.3
Sun Prairie - 3.9
Superior - 3.2
Terry - 2.7
The Silos - 3.2
Thompson Falls - 3.1
Three Forks - 3.9
Townsend - 3.4
Trego - 2.5
Troy - 2.8
Turah - 3.5
Ulm - 3.9
Valier - 3.7
Vaughn - 3.9
Victor - 3.5
Walkerville - 3.8
West Glendive - 2.9
West Yellowstone - 3.6
Wheatland - 3.9
Whitefish - 3
Whitehall - 3.7
White Haven - 2.9
White Sulphur Springs - 3.8
Wibaux - 3.1
Wolf Point - 2.9
Woods Bay - 3.1
Wye - 3.3