Mercer County, OH: Current UV Index and Hourly Forecast

As of 6:37 AM EDT on September 21, 2025, all 10 cities in Mercer 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 Mercer County, OH is expected to be 5 in Coldwater between 2:00 PM - 3:00 PM EDT today.

Search Cities in Mercer County, OH

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Mercer County, OH as of 6:37 AM EDT, September 21, 2025

Current UV Index in Cities in Mercer County, OH

6:37 AM EDT, September 21, 2025