As of 12:51 PM EDT on August 31, 2025, all 30 cities in Jefferson County, NY in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Adams Center, NY with a reading of 6.
Over the next 24 hours, the highest UV Index reading in Jefferson County, NY is expected to be 6.6 in Adams Center 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 |