St. Johns County, FL: Current UV Index and Hourly Forecast

As of 11:20 AM EDT on June 25, 2025, all 13 cities in St. Johns County, FL in our database have a UV Index reading of High. The city with the highest UV Index reading right now is St. Augustine, FL with a reading of 6.6.

Over the next 24 hours, the highest UV Index reading in St. Johns County, FL is expected to be 10.1 in Palm Valley between 1:00 PM - 2:00 PM EDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in St. Johns County, FL as of 11:20 AM EDT, June 25, 2025

Current UV Index in Cities in St. Johns County, FL

11:20 AM EDT, June 25, 2025