As of 2:48 PM EST on January 28, 2026, all 10 cities in Clay County, FL in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Keystone Heights, FL with a reading of 3.6.
Over the next 24 hours, the highest UV Index reading in Clay County, FL is expected to be 4.9 in Middleburg between 12:00 PM - 1:00 PM EST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |