Mercer County, MO: Current UV Index and Hourly Forecast

As of 8:41 PM CDT on October 2, 2025, all 4 cities in Mercer County, MO 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, MO is expected to be 6 in Princeton between 1:00 PM - 2:00 PM CDT tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Mercer County, MO as of 8:41 PM CDT, October 2, 2025

Current UV Index in Cities in Mercer County, MO

8:41 PM CDT, October 2, 2025