As of 10:50 AM MST on February 1, 2026, all 14 cities in Pennington County, SD in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Rapid City, SD with a reading of 1.3.
Over the next 24 hours, the highest UV Index reading in Pennington County, SD is expected to be 1.9 in New Underwood between 11:00 AM - 12:00 PM MST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |