As of 5:19 PM EDT on March 12, 2026, all 16 cities in Sussex County, NJ in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Hopatcong, NJ with a reading of 0.4.
Over the next 24 hours, the highest UV Index reading in Sussex County, NJ is expected to be 2.7 in Franklin 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 |