As of 3:33 AM MDT on May 18, 2025, all 10 cities in Fall River County, SD in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Fall River County, SD is expected to be 3.4 in Oelrichs between 10:00 AM - 11:00 AM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |