As of 12:29 PM EDT on May 10, 2026, out of 8 cities in Washington County, TN in our database, 4 cities (50%) have a UV Index reading of Very High, while 4 cities (50%) have a UV Index reading of High. The city with the highest UV Index reading right now is Johnson City, TN with a reading of 7.5.
Over the next 24 hours, the highest UV Index reading in Washington County, TN is expected to be 8.5 in Johnson 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 |