Chester County, PA: Current UV Index and Hourly Forecast

As of 9:55 PM EDT on September 2, 2025, all 44 cities in Chester County, PA 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 Chester County, PA is expected to be 7.1 in South Pottstown 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 Chester County, PA as of 9:55 PM EDT, September 2, 2025

Current UV Index in Cities in Chester County, PA

9:55 PM EDT, September 2, 2025