As of 12:30 PM CST on December 15, 2025, all 16 cities in Sumner County, TN in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Hendersonville, TN with a reading of 2.5.
Over the next 24 hours, the highest UV Index reading in Sumner County, TN is expected to be 2.5 in Hendersonville between 12:00 PM - 1:00 PM CST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |