As of 3:41 PM MDT on May 23, 2026, out of 5 cities in Custer County, SD in our database, 3 cities (60%) have a UV Index reading of Moderate, while 2 cities (40%) have a UV Index reading of High. The city with the highest UV Index reading right now is Pringle, SD with a reading of 5.6.
Over the next 24 hours, the highest UV Index reading in Custer County, SD is expected to be 8.4 in Custer between 1:00 PM - 2:00 PM MDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |