UV Index Today in South Dakota (SD) Saturday, August 29, 2026 -11:47 AM CDT (GMT-5) The average maximum UV Index today across 189 locations in South Dakota (SD) , is 7.3. The highest projected maximum is 8.1 in Lead at 2:00 PM CDT, while the lowest projected maximum is 6.4 in Lemmon at 2:00 PM CDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 7.1. The highest projected maximum is 7.6 in Lead at 2:00 PM CDT, and the lowest projected maximum is 5.5 in Watertown at 2:00 PM CDT.
66 Counties in South Dakota (SD) Average Maximum UV Index Today
Aurora County - 6.7
Beadle County - 6.9
Bennett County - 7.8
Bon Homme County - 7.3
Brookings County - 7.4
Brown County - 7
Brule County - 6.8
Buffalo County - 7.2
Butte County - 7.3
Campbell County - 7.1
Charles Mix County - 7
Clark County - 7.2
Clay County - 7.5
Codington County - 7.1
Corson County - 6.9
Custer County - 8.1
Davison County - 6.9
Day County - 7.1
Deuel County - 7.3
Dewey County - 7.2
Douglas County - 6.7
Edmunds County - 7
Fall River County - 7.8
Faulk County - 6.7
Grant County - 7
Gregory County - 7.5
Haakon County - 7.6
Hamlin County - 7.3
Hand County - 7.3
Hanson County - 7
Harding County - 6.6
Hughes County - 7.3
Hutchinson County - 7
Hyde County - 7.3
Jackson County - 7.7
Jerauld County - 7.2
Jones County - 7.5
Kingsbury County - 7.2
Lake County - 7.3
Lawrence County - 7.8
Lincoln County - 7.4
Lyman County - 7
McCook County - 7.3
McPherson County - 7
Marshall County - 7
Meade County - 7.5
Mellette County - 7.6
Miner County - 7.3
Minnehaha County - 7.4
Moody County - 7.3
Oglala Lakota County - 7.8
Pennington County - 7.6
Perkins County - 6.4
Potter County - 7.3
Roberts County - 6.9
Sanborn County - 7.2
Spink County - 6.8
Stanley County - 7.3
Sully County - 7.3
Todd County - 7.7
Tripp County - 7.3
Turner County - 7.4
Union County - 7.4
Walworth County - 7.1
Yankton County - 7.4
Ziebach County - 7.3151 Places in South Dakota (SD) Maximum UV Index Today
Aberdeen - 7
Agency Village - 7
Alcester - 7.4
Alexandria - 6.9
Allen - 7.8
Antelope - 7.7
Arlington - 7.2
Armour - 6.7
Ashland Heights - 7.4
Aurora - 7.4
Avon - 7.3
Baltic - 7.4
Belle Fourche - 7.3
Beresford - 7.4
Big Stone City - 7
Blackhawk - 7.4
Blucksberg Mountain - 7.6
Boulder Canyon - 7.6
Box Elder - 7.4
Brandon - 7.4
Britton - 7
Brookings - 7.4
Bryant - 7.2
Burke - 7.5
Canistota - 7.4
Canton - 7.5
Castlewood - 7.2
Centerville - 7.3
Chamberlain - 6.8
Clark - 7.2
Clear Lake - 7.3
Colman - 7.3
Colonial Pine Hills - 7.7
Colton - 7.4
Corsica - 6.6
Crooks - 7.4
Custer - 8.1
Dakota Dunes - 7.4
Deadwood - 7.7
Dell Rapids - 7.4
De Smet - 7.2
Dupree - 7.2
Eagle Butte - 7.3
Edgemont - 7.7
Elk Point - 7.5
Elkton - 7.4
Emery - 7
Estelline - 7.3
Eureka - 7
Faulkton - 6.7
Flandreau - 7.4
Fort Pierre - 7.3
Fort Thompson - 7.2
Freeman - 7.3
Garretson - 7.4
Gayville - 7.3
Gettysburg - 7.3
Green Valley - 7.4
Gregory - 7.6
Groton - 7.1
Harrisburg - 7.4
Hartford - 7.5
Herreid - 7.1
Highmore - 7.3
Hill City - 8
Hot Springs - 7.9
Howard - 7.3
Humboldt - 7.4
Huron - 6.9
Ipswich - 7
Jefferson - 7.4
Johnson Siding - 8
Kyle - 7.7
Lake Andes - 6.6
Lake Madison - 7.3
Lake Norden - 7.3
Lake Preston - 7.2
Lead - 8.1
Lemmon - 6.4
Lennox - 7.4
Lower Brule - 7.2
McLaughlin - 6.9
Madison - 7.3
Manderson-White Horse Creek - 7.8
Marion - 7.4
Martin - 7.8
Meadow View Addition - 7.4
Menno - 7.3
Milbank - 7
Miller - 7.3
Mina - 7
Mission - 7.7
Mitchell - 6.9
Mobridge - 7.1
Murdo - 7.5
New Underwood - 7.5
North Eagle Butte - 7.3
North Sioux City - 7.4
North Spearfish - 7.7
Oacoma - 6.8
Oglala - 7.7
Onida - 7.3
Parker - 7.4
Parkston - 6.5
Parmelee - 7.7
Philip - 7.6
Piedmont - 7.6
Pierre - 7.3
Pine Ridge - 7.9
Plankinton - 6.7
Platte - 6.6
Ramona - 7.3
Rapid City - 7.7
Rapid Valley - 7.4
Redfield - 6.8
Rosebud - 7.7
St. Francis - 7.7
Salem - 7.4
Scotland - 7.2
Selby - 7.1
Shindler - 7.4
Sioux Falls - 7.4
Sisseton - 6.8
Spearfish - 7.7
Springfield - 7.5
Sturgis - 7.6
Summerset - 7.4
Tea - 7.4
Timber Lake - 7
Tripp - 6.8
Tyndall - 7.3
Valley Springs - 7.4
Vermillion - 7.5
Viborg - 7.4
Volga - 7.3
Wagner - 7.4
Wall - 7.6
Wanblee - 7.7
Warner - 6.9
Watertown - 7.1
Webster - 7.1
Wessington Springs - 7.2
White River - 7.6
Whitewood - 7.7
Winner - 7.3
Wolsey - 6.9
Wonderland Homes - 7.4
Woonsocket - 7.2
Worthing - 7.4
Wounded Knee - 7.8
Yankton - 7.4