As of 1:27 PM EDT on September 20, 2026, out of 3 cities in Grainger County, TN in our database, 2 cities (67%) have a UV Index reading of Very High, while 1 city (33%) have a UV Index reading of High. The city with the highest UV Index reading right now is Bean Station, TN with a reading of 7.5.
Over the next 24 hours, the highest UV Index reading in Grainger County, TN is expected to be 7.5 in Bean Station between 1:00 PM - 2:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |