As of 2:49 PM EDT on September 18, 2026, out of 5 cities in Williamsburg County, SC in our database, 4 cities (80%) have a UV Index reading of Low, while 1 city (20%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Kingstree, SC with a reading of 2.6.
Over the next 24 hours, the highest UV Index reading in Williamsburg County, SC is expected to be 8.1 in Kingstree between 1:00 PM - 2:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |