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

As of 7:43 PM EDT on July 18, 2025, all 13 cities in St. Johns County, FL in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Fruit Cove, FL with a reading of 0.6.

Over the next 24 hours, the highest UV Index reading in St. Johns County, FL is expected to be 11.3 in St. Augustine between 1:00 PM - 2:00 PM EDT tomorrow.

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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 7:43 PM EDT, July 18, 2025

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

7:43 PM EDT, July 18, 2025