As of 10:52 AM CDT on July 5, 2026, out of 16 cities in Sumner County, TN in our database, 14 cities (88%) have a UV Index reading of High, while 2 cities (13%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Gallatin, TN with a reading of 5.6.
Over the next 24 hours, the highest UV Index reading in Sumner County, TN is expected to be 9.8 in Hendersonville between 1:00 PM - 2:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |