As of 2:14 PM EST on February 21, 2026, all 2 cities in Carter County, KY in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Grayson, KY with a reading of 2.9.
Over the next 24 hours, the highest UV Index reading in Carter County, KY is expected to be 2.9 in Grayson between 2:00 PM - 3:00 PM EST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |