UV Index Today in Chester County, Pennsylvania (PA)

The average maximum UV Index today across 109 locations in Chester County, Pennsylvania (PA), is 3.8. The highest projected maximum is 5 in Uwchlan at 1:00 PM EDT, while the lowest projected maximum is 1.4 in Phoenixville at 1:00 PM EDT.

Tomorrow, the average maximum UV Index across those same locations is expected to be 3.4. The highest projected maximum is 5.4 in East Nottingham at 1:00 PM EDT, and the lowest projected maximum is 1.7 in Phoenixville at 3:00 PM EDT.