As of 4:35 PM CDT on July 1, 2026, out of 483 cities in South Dakota in our database, 411 cities (85%) have a UV Index reading of Moderate, 54 cities (11%) have a UV Index reading of High, while 18 cities (4%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Ardmore, SD with a reading of 6.5.
Over the next 24 hours, the highest UV Index reading in South Dakota is expected to be 9.2 in Wagner between 2:00 PM - 3:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |