Union County, NJ: Current UV Index and Hourly Forecast

As of 3:28 PM EDT on June 23, 2025, out of 19 cities in Union County, NJ in our database, 18 cities (95%) have a UV Index reading of High, while 1 city (5%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Plainfield, NJ with a reading of 7.6.

Over the next 24 hours, the highest UV Index reading in Union County, NJ is expected to be 10.1 in New Providence between 1:00 PM - 2:00 PM EDT tomorrow.

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 3:28 PM EDT, June 23, 2025

Current UV Index in Cities in Union County, NJ

3:28 PM EDT, June 23, 2025