UV Index Today in Montana (MT) Saturday, August 29, 2026 -10:46 AM MDT (GMT-6) The average maximum UV Index today across 152 locations in Montana (MT) , is 5.7. The highest projected maximum is 7.2 in Busby at 1:00 PM MDT, while the lowest projected maximum is 3.2 in Fort Benton at 11:00 AM MDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 4.7. The highest projected maximum is 6.3 in Lame Deer at 1:00 PM MDT, and the lowest projected maximum is 1.6 in Eureka at 1:00 PM MDT.
55 Counties in Montana (MT) Average Maximum UV Index Today
Beaverhead County - 6.6
Big Horn County - 6.7
Blaine County - 4.4
Broadwater County - 5.5
Carbon County - 5.7
Carter County - 6
Cascade County - 5.2
Chouteau County - 4.2
Custer County - 5.9
Daniels County - 5.2
Dawson County - 5.7
Deer Lodge County - 6.9
Fallon County - 5.9
Fergus County - 3.5
Flathead County - 5.8
Gallatin County - 5.6
Garfield County - 6.1
Glacier County - 5.3
Golden Valley County - 5.8
Granite County - 6.9
Hill County - 5
Jefferson County - 6.2
Judith Basin County - 4.2
Lake County - 6
Lewis and Clark County - 6.2
Liberty County - 5
Lincoln County - 5.2
McCone County - 5.5
Madison County - 6
Meagher County - 3.8
Mineral County - 6.2
Missoula County - 6.1
Musselshell County - 6.4
Park County - 5.7
Phillips County - 4.2
Pondera County - 5
Powder River County - 6.6
Powell County - 6.3
Prairie County - 5.7
Ravalli County - 6.1
Richland County - 5
Roosevelt County - 5.1
Rosebud County - 6.5
Sanders County - 6.3
Sheridan County - 5.1
Silver Bow County - 6.9
Stillwater County - 6.4
Sweet Grass County - 6.3
Teton County - 6.2
Toole County - 4.7
Treasure County - 6.2
Valley County - 5.2
Wheatland County - 4.5
Wibaux County - 5.2
Yellowstone County - 5.8152 Places in Montana (MT) Maximum UV Index Today
Absarokee - 6.6
Alberton - 6.2
Arlee - 6.2
Ashland - 6.6
Baker - 5.9
Batavia - 5.5
Belgrade - 5.6
Belt - 4.3
Bigfork - 6
Big Sandy - 4.7
Big Sky - 5.7
Big Timber - 6.3
Billings - 5.9
Black Eagle - 5.1
Bonner-West Riverside - 6.1
Boulder - 6.7
Bozeman - 5.6
Bridger - 5.9
Browning - 5.7
Busby - 7.2
Carlton - 6.1
Cascade - 6.2
Chester - 5
Chinook - 5
Choteau - 6.1
Churchill - 5.6
Circle - 5.5
Clancy - 6.2
Clinton - 5.8
Colstrip - 6.4
Columbia Falls - 5.8
Columbus - 6.1
Conrad - 5
Corvallis - 6.2
Crow Agency - 6.7
Culbertson - 5
Cut Bank - 5
Darby - 5.9
Deer Lodge - 6.6
Dillon - 6.6
East Helena - 6.2
East Missoula - 6.1
Ennis - 5.8
Eureka - 5.3
Evergreen - 5.8
Fairfield - 6.2
Fairview - 4.9
Florence - 6.1
Forsyth - 6
Fort Belknap Agency - 4.7
Fort Benton - 3.2
Four Corners - 5.6
Frenchtown - 6.2
Gallatin Gateway - 5.6
Gardiner - 6
Glasgow - 5.2
Glendive - 5.7
Great Falls - 5.1
Hamilton - 5.9
Hardin - 6.4
Harlem - 4.7
Harlowton - 4.5
Havre - 5.2
Havre North - 5.2
Hays - 3.4
Heart Butte - 4.4
Helena - 6.2
Helena Flats - 5.8
Helena Valley Northeast - 6.1
Helena Valley Northwest - 6.1
Helena Valley Southeast - 6.2
Helena Valley West Central - 6.1
Helena West Side - 6.2
Hot Springs - 6.2
Hungry Horse - 6
Jefferson City - 6.2
Joliet - 5.8
Kalispell - 5.8
King Arthur Park - 5.6
Lakeside - 5.9
Lame Deer - 6.5
Laurel - 5.6
Lewistown - 3.5
Libby - 5
Lincoln - 6.6
Lindisfarne - 5.9
Livingston - 6.6
Lockwood - 5.9
Lolo - 6.1
Malmstrom AFB - 5.1
Malta - 5
Manhattan - 5.6
Marion - 6
Miles City - 5.9
Missoula - 6.1
Montana City - 6.2
Muddy - 6.8
North Browning - 5.7
Orchard Homes - 6.1
Pablo - 6.1
Park City - 6.4
Philipsburg - 6.9
Pinesdale - 5.9
Pioneer Junction - 4.9
Plains - 6.3
Plentywood - 5.1
Polson - 5.9
Ponderosa Pines - 4.7
Poplar - 5.1
Pray - 4.4
Red Lodge - 5.4
Riverbend - 6.2
Rocky Boy West - 4.7
Ronan - 6.1
Roundup - 6.4
St. Ignatius - 6.2
Scobey - 5.2
Seeley Lake - 6
Shelby - 4.7
Sheridan - 6.6
Sidney - 5
Somers - 5.9
South Browning - 5.7
South Hills - 6.2
Spokane Creek - 5.9
Stevensville - 6.3
Sun Prairie - 5.2
Superior - 6.3
Terry - 5.7
The Silos - 5.5
Thompson Falls - 6.4
Three Forks - 5.6
Townsend - 5.8
Trego - 5.5
Troy - 5.8
Turah - 5.8
Ulm - 5.2
Valier - 5.7
Vaughn - 5.2
Victor - 6.2
Walkerville - 6.9
West Glendive - 5.7
West Yellowstone - 5.8
Wheatland - 5.6
Whitefish - 6
Whitehall - 6.5
White Haven - 4.9
White Sulphur Springs - 3.8
Wibaux - 5.2
Wolf Point - 5.2
Woods Bay - 6
Wye - 6.2