As of 2:56 AM EST on December 31, 2025, all 2 cities in Grant County, WV in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Grant County, WV is expected to be 1.7 in Petersburg between 12:00 PM - 1:00 PM EST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |