As of 5:46 PM EDT on March 17, 2026, all 2 cities in Harrison County, KY in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Cynthiana, KY with a reading of 1.3.
Over the next 24 hours, the highest UV Index reading in Harrison County, KY is expected to be 3.1 in Cynthiana between 2:00 PM - 3:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |