As of 3:37 PM CDT on June 12, 2026, out of 6 cities in Madison County, TN in our database, 5 cities (83%) have a UV Index reading of High, while 1 city (17%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Mercer, TN with a reading of 7.6.
Over the next 24 hours, the highest UV Index reading in Madison County, TN is expected to be 9.1 in Mercer between 12:00 PM - 1:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |