As of 11:01 AM EDT on June 22, 2026, all 3 cities in Mercer County, KY in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Harrodsburg, KY with a reading of 4.9.
Over the next 24 hours, the highest UV Index reading in Mercer County, KY is expected to be 4.9 in Harrodsburg between 11:00 AM - 12:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |