Union County, NJ: Current UV Index and Hourly Forecast

As of 12:05 PM EDT on July 26, 2025, all 19 cities in Union County, NJ in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Rahway, NJ with a reading of 8.6.

Over the next 24 hours, the highest UV Index reading in Union County, NJ is expected to be 9.1 in Plainfield between 1:00 PM - 2:00 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 12:05 PM EDT, July 26, 2025

Current UV Index in Cities in Union County, NJ

12:05 PM EDT, July 26, 2025