Union County, OH: Current UV Index and Hourly Forecast

As of 2:38 AM EDT on September 1, 2025, all 7 cities in Union County, OH 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, OH is expected to be 6.9 in Marysville between 2:00 PM - 3:00 PM EDT today.

Search Cities in Union County, OH

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Union County, OH as of 2:38 AM EDT, September 1, 2025

Current UV Index in Cities in Union County, OH

2:38 AM EDT, September 1, 2025