Union County, NJ: Current UV Index and Hourly Forecast

As of 2:57 AM EDT on March 30, 2026, all 19 cities in Union County, NJ 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 Union County, NJ is expected to be 4 in Plainfield between 11:00 AM - 12:00 PM EDT today.

Search Cities in Union County, NJ

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Union County, NJ as of 2:57 AM EDT, March 30, 2026

Current UV Index in Cities in Union County, NJ

2:57 AM EDT, March 30, 2026