As of 11:25 AM CDT on July 23, 2026, all 5 cities in Mellette County, SD in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Wood, SD with a reading of 3.4.
Over the next 24 hours, the highest UV Index reading in Mellette County, SD is expected to be 6.4 in Wood between 12:00 PM - 1:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |