South Dakota (SD): Current UV Index and Hourly Forecast

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As of 10:31 AM CDT on August 20, 2026, out of 483 cities in South Dakota in our database, 312 cities (65%) have a UV Index reading of Low, while 171 cities (35%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Dakota Dunes, SD with a reading of 2.8.

Over the next 24 hours, the highest UV Index reading in South Dakota is expected to be 8.5 in Ardmore between 1:00 PM - 2:00 PM MDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in South Dakota as of 10:31 AM CDT, August 20, 2026

Counties in South Dakota (SD)

Current UV Index in Major Cities in South Dakota (SD)

10:31 AM CDT, August 20, 2026