As of 3:46 PM EDT on July 15, 2025, out of 9 cities in Onslow County, NC in our database, 8 cities (89%) have a UV Index reading of Very High, while 1 city (11%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Holly Ridge, NC with a reading of 8.7.
Over the next 24 hours, the highest UV Index reading in Onslow County, NC is expected to be 11 in Holly Ridge between 1:00 PM - 2:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |