UV Index Today in Chester County, Pennsylvania (PA)

The average maximum UV Index today across 109 locations in Chester County, Pennsylvania (PA), is 8.1. The highest projected maximum is 8.3 in Phoenixville at 1:00 PM EDT, while the lowest projected maximum is 7.9 in Tredyffrin at 1:00 PM EDT.

Tomorrow, the average maximum UV Index across those same locations is expected to be 8.1. The highest projected maximum is 8.5 in Pottstown at 1:00 PM EDT, and the lowest projected maximum is 7.9 in Tredyffrin at 2:00 PM EDT.