Union County, SD: Current UV Index and Hourly Forecast

As of 2:20 PM CDT on July 22, 2026, out of 7 cities in Union County, SD in our database, 5 cities (71%) have a UV Index reading of Moderate, while 2 cities (29%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Dakota Dunes, SD with a reading of 3.3.

Over the next 24 hours, the highest UV Index reading in Union County, SD is expected to be 7.7 in Beresford between 1:00 PM - 2:00 PM CDT tomorrow.

Search Cities in Union County, SD

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Union County, SD as of 2:20 PM CDT, July 22, 2026

Current UV Index in Cities in Union County, SD

2:20 PM CDT, July 22, 2026