UV Index Today in South Dakota (SD) Saturday, August 8, 2026 -11:21 AM CDT (GMT-5) The average maximum UV Index today across 189 locations in South Dakota (SD) , is 6.8. The highest projected maximum is 7.8 in Custer at 2:00 PM CDT, while the lowest projected maximum is 5.8 in Murdo at 2:00 PM CDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 5.8. The highest projected maximum is 7.4 in Custer at 2:00 PM CDT, and the lowest projected maximum is 4.4 in De Smet at 1:00 PM CDT.
66 Counties in South Dakota (SD) Average Maximum UV Index Today
Aurora County - 7.4
Beadle County - 7.2
Bennett County - 7
Bon Homme County - 7.2
Brookings County - 7.4
Brown County - 6.4
Brule County - 6.7
Buffalo County - 6.6
Butte County - 6.3
Campbell County - 6.2
Charles Mix County - 7.3
Clark County - 6.9
Clay County - 7
Codington County - 6.9
Corson County - 6.1
Custer County - 7.8
Davison County - 7.4
Day County - 6.3
Deuel County - 7.1
Dewey County - 6
Douglas County - 7.4
Edmunds County - 6.4
Fall River County - 7.7
Faulk County - 6.6
Grant County - 6.1
Gregory County - 6.5
Haakon County - 6.3
Hamlin County - 7.3
Hand County - 7.1
Hanson County - 6.7
Harding County - 5.8
Hughes County - 6
Hutchinson County - 6.9
Hyde County - 6.9
Jackson County - 6.6
Jerauld County - 7.4
Jones County - 5.8
Kingsbury County - 7.4
Lake County - 7.3
Lawrence County - 6.8
Lincoln County - 6.9
Lyman County - 6.6
McCook County - 6.8
McPherson County - 6.2
Marshall County - 5.9
Meade County - 6.8
Mellette County - 6.2
Miner County - 7.3
Minnehaha County - 7
Moody County - 7.3
Oglala Lakota County - 7
Pennington County - 6.9
Perkins County - 6.3
Potter County - 6.6
Roberts County - 6.1
Sanborn County - 7.5
Spink County - 6.9
Stanley County - 5.9
Sully County - 6.7
Todd County - 6.5
Tripp County - 6.1
Turner County - 7.1
Union County - 6.3
Walworth County - 6.3
Yankton County - 6.3
Ziebach County - 5.9151 Places in South Dakota (SD) Maximum UV Index Today
Aberdeen - 6.4
Agency Village - 6.1
Alcester - 6.9
Alexandria - 6.8
Allen - 7
Antelope - 6.5
Arlington - 7.4
Armour - 7.4
Ashland Heights - 6.8
Aurora - 7.4
Avon - 7.4
Baltic - 7
Belle Fourche - 6.3
Beresford - 6.9
Big Stone City - 6.1
Blackhawk - 6.8
Blucksberg Mountain - 7.1
Boulder Canyon - 6.7
Box Elder - 6.7
Brandon - 6.9
Britton - 5.9
Brookings - 7.4
Bryant - 7.4
Burke - 6.6
Canistota - 7.3
Canton - 6.8
Castlewood - 7.2
Centerville - 6.8
Chamberlain - 6.7
Clark - 6.9
Clear Lake - 7.1
Colman - 7.3
Colonial Pine Hills - 6.9
Colton - 7.2
Corsica - 7.4
Crooks - 7
Custer - 7.8
Dakota Dunes - 6
Deadwood - 6.7
Dell Rapids - 7
De Smet - 7.4
Dupree - 5.9
Eagle Butte - 5.9
Edgemont - 7.7
Elk Point - 6.8
Elkton - 7.3
Emery - 6.5
Estelline - 7.4
Eureka - 6.2
Faulkton - 6.6
Flandreau - 7.3
Fort Pierre - 5.9
Fort Thompson - 6.6
Freeman - 6.4
Garretson - 6.9
Gayville - 6.2
Gettysburg - 6.6
Green Valley - 6.7
Gregory - 6.4
Groton - 6.4
Harrisburg - 7
Hartford - 7.1
Herreid - 6.2
Highmore - 6.9
Hill City - 7.4
Hot Springs - 7.7
Howard - 7.3
Humboldt - 7.2
Huron - 7.3
Ipswich - 6.3
Jefferson - 6
Johnson Siding - 7.4
Kyle - 6.9
Lake Andes - 7.3
Lake Madison - 7.3
Lake Norden - 7.4
Lake Preston - 7.3
Lead - 7.4
Lemmon - 6.3
Lennox - 7
Lower Brule - 6.6
McLaughlin - 6.1
Madison - 7.3
Manderson-White Horse Creek - 7
Marion - 7.3
Martin - 6.9
Meadow View Addition - 7
Menno - 6.4
Milbank - 6
Miller - 7.1
Mina - 6.4
Mission - 6.5
Mitchell - 7.4
Mobridge - 6.3
Murdo - 5.8
New Underwood - 6.6
North Eagle Butte - 5.9
North Sioux City - 6
North Spearfish - 6.5
Oacoma - 6.7
Oglala - 7
Onida - 6.7
Parker - 7.3
Parkston - 7.4
Parmelee - 6.6
Philip - 6.3
Piedmont - 7.1
Pierre - 6
Pine Ridge - 7.2
Plankinton - 7.4
Platte - 7.2
Ramona - 7.2
Rapid City - 6.9
Rapid Valley - 6.7
Redfield - 6.9
Rosebud - 6.5
St. Francis - 6.6
Salem - 6.6
Scotland - 7.4
Selby - 6.4
Shindler - 7
Sioux Falls - 7
Sisseton - 6.2
Spearfish - 6.7
Springfield - 7
Sturgis - 6.7
Summerset - 6.8
Tea - 7
Timber Lake - 6.1
Tripp - 7.4
Tyndall - 7
Valley Springs - 6.9
Vermillion - 7.2
Viborg - 7
Volga - 7.4
Wagner - 7.4
Wall - 6.5
Wanblee - 6.6
Warner - 6.6
Watertown - 6.8
Webster - 6.5
Wessington Springs - 7.4
White River - 6.2
Whitewood - 6.7
Winner - 6.1
Wolsey - 7.1
Wonderland Homes - 6.8
Woonsocket - 7.5
Worthing - 6.8
Wounded Knee - 7
Yankton - 6.3