As of 6:41 PM MDT on June 7, 2025, all 8 cities in Dewey County, SD in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is North Eagle Butte, SD with a reading of 1.1.
Over the next 24 hours, the highest UV Index reading in Dewey County, SD is expected to be 6 in Lantry between 12:00 PM - 1:00 PM MDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |