As of 1:19 PM EDT on September 15, 2026, all 13 cities in Gwinnett County, GA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Lawrenceville, GA with a reading of 8.4.
Over the next 24 hours, the highest UV Index reading in Gwinnett County, GA is expected to be 8.6 in Peachtree Corners between 2:00 PM - 3:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |