As of 1:41 PM EDT on July 18, 2025, all 5 cities in Loudon County, TN in our database have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Philadelphia, TN with a reading of 10.6.
Over the next 24 hours, the highest UV Index reading in Loudon County, TN is expected to be 10.7 in Lenoir City 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 |