UV Index Today in South Dakota (SD) Wednesday, July 15, 2026 -11:14 AM CDT (GMT-5) The average maximum UV Index today across 189 locations in South Dakota (SD) , is 9.8. The highest projected maximum is 10.7 in Lead at 2:00 PM CDT, while the lowest projected maximum is 9.3 in Sisseton at 2:00 PM CDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 9.6. The highest projected maximum is 10.4 in Hot Springs at 2:00 PM CDT, and the lowest projected maximum is 6.9 in Piedmont at 3:00 PM CDT.
66 Counties in South Dakota (SD) Average Maximum UV Index Today
Aurora County - 9.7
Beadle County - 9.6
Bennett County - 10.3
Bon Homme County - 9.9
Brookings County - 9.7
Brown County - 9.4
Brule County - 9.8
Buffalo County - 9.7
Butte County - 10
Campbell County - 9.5
Charles Mix County - 9.8
Clark County - 9.6
Clay County - 9.8
Codington County - 9.6
Corson County - 9.4
Custer County - 10.6
Davison County - 9.7
Day County - 9.5
Deuel County - 9.7
Dewey County - 9.7
Douglas County - 9.8
Edmunds County - 9.4
Fall River County - 10.4
Faulk County - 9.5
Grant County - 9.4
Gregory County - 9.9
Haakon County - 9.9
Hamlin County - 9.7
Hand County - 9.7
Hanson County - 9.7
Harding County - 10
Hughes County - 9.7
Hutchinson County - 9.8
Hyde County - 9.7
Jackson County - 10.1
Jerauld County - 9.7
Jones County - 9.9
Kingsbury County - 9.7
Lake County - 9.8
Lawrence County - 10.3
Lincoln County - 9.8
Lyman County - 9.8
McCook County - 9.7
McPherson County - 9.4
Marshall County - 9.3
Meade County - 10.3
Mellette County - 10.1
Miner County - 9.7
Minnehaha County - 9.8
Moody County - 9.8
Oglala Lakota County - 10.3
Pennington County - 10.3
Perkins County - 9.6
Potter County - 9.5
Roberts County - 9.3
Sanborn County - 9.7
Spink County - 9.6
Stanley County - 9.7
Sully County - 9.6
Todd County - 10.2
Tripp County - 9.9
Turner County - 9.8
Union County - 9.9
Walworth County - 9.4
Yankton County - 9.8
Ziebach County - 9.7151 Places in South Dakota (SD) Maximum UV Index Today
Aberdeen - 9.4
Agency Village - 9.3
Alcester - 9.8
Alexandria - 9.7
Allen - 10.3
Antelope - 10.2
Arlington - 9.7
Armour - 9.8
Ashland Heights - 10.2
Aurora - 9.7
Avon - 9.9
Baltic - 9.8
Belle Fourche - 10
Beresford - 9.8
Big Stone City - 9.4
Blackhawk - 10.2
Blucksberg Mountain - 10.5
Boulder Canyon - 10.1
Box Elder - 10.2
Brandon - 9.8
Britton - 9.3
Brookings - 9.7
Bryant - 9.7
Burke - 9.9
Canistota - 9.7
Canton - 9.8
Castlewood - 9.7
Centerville - 9.8
Chamberlain - 9.8
Clark - 9.6
Clear Lake - 9.7
Colman - 9.8
Colonial Pine Hills - 10.3
Colton - 9.8
Corsica - 9.8
Crooks - 9.8
Custer - 10.6
Dakota Dunes - 9.9
Deadwood - 10.2
Dell Rapids - 9.8
De Smet - 9.7
Dupree - 9.7
Eagle Butte - 9.7
Edgemont - 10.4
Elk Point - 9.8
Elkton - 9.8
Emery - 9.7
Estelline - 9.7
Eureka - 9.4
Faulkton - 9.5
Flandreau - 9.8
Fort Pierre - 9.7
Fort Thompson - 9.7
Freeman - 9.8
Garretson - 9.8
Gayville - 9.8
Gettysburg - 9.5
Green Valley - 10.2
Gregory - 9.9
Groton - 9.3
Harrisburg - 9.8
Hartford - 9.8
Herreid - 9.5
Highmore - 9.7
Hill City - 10.6
Hot Springs - 10.4
Howard - 9.7
Humboldt - 9.8
Huron - 9.7
Ipswich - 9.4
Jefferson - 9.9
Johnson Siding - 10.6
Kyle - 10.2
Lake Andes - 9.8
Lake Madison - 9.8
Lake Norden - 9.7
Lake Preston - 9.7
Lead - 10.7
Lemmon - 9.6
Lennox - 9.8
Lower Brule - 9.7
McLaughlin - 9.4
Madison - 9.8
Manderson-White Horse Creek - 10.3
Marion - 9.7
Martin - 10.3
Meadow View Addition - 9.8
Menno - 9.8
Milbank - 9.5
Miller - 9.7
Mina - 9.4
Mission - 10.2
Mitchell - 9.7
Mobridge - 9.4
Murdo - 9.9
New Underwood - 10.1
North Eagle Butte - 9.7
North Sioux City - 9.9
North Spearfish - 10.3
Oacoma - 9.8
Oglala - 10.3
Onida - 9.6
Parker - 9.7
Parkston - 9.7
Parmelee - 10.3
Philip - 9.9
Piedmont - 10.5
Pierre - 9.7
Pine Ridge - 10.4
Plankinton - 9.7
Platte - 9.8
Ramona - 9.8
Rapid City - 10.3
Rapid Valley - 10.2
Redfield - 9.6
Rosebud - 10.2
St. Francis - 10.3
Salem - 9.7
Scotland - 9.8
Selby - 9.5
Shindler - 9.8
Sioux Falls - 9.8
Sisseton - 9.3
Spearfish - 10.2
Springfield - 9.9
Sturgis - 10.1
Summerset - 10.2
Tea - 9.8
Timber Lake - 9.6
Tripp - 9.8
Tyndall - 9.8
Valley Springs - 9.8
Vermillion - 9.8
Viborg - 9.8
Volga - 9.7
Wagner - 9.9
Wall - 10
Wanblee - 10.1
Warner - 9.4
Watertown - 9.6
Webster - 9.5
Wessington Springs - 9.7
White River - 10.1
Whitewood - 10.2
Winner - 9.9
Wolsey - 9.6
Wonderland Homes - 10.2
Woonsocket - 9.7
Worthing - 9.8
Wounded Knee - 10.4
Yankton - 9.8