As of 11:00 AM EDT on October 17, 2025, all 45 cities in Middlesex County, NJ in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is New Brunswick, NJ with a reading of 2.6.
Over the next 24 hours, the highest UV Index reading in Middlesex County, NJ is expected to be 3.9 in Princeton Meadows between 1:00 PM - 2:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |