As of 5:59 AM EDT on April 30, 2026, all 17 cities in Sumter County, SC 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 Sumter County, SC is expected to be 6.3 in South Sumter between 12:00 PM - 1:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |