UV Index Today in Chester County, Pennsylvania (PA) Wednesday, November 4, 2026 -12:18 PM EST (GMT-5) The average maximum UV Index today across 109 locations in Chester County, Pennsylvania (PA) , is 3.2. The highest projected maximum is 3.3 in Hockessin at 12:00 PM EST, while the lowest projected maximum is 3.2 in Tredyffrin at 12:00 PM EST.
Tomorrow, the average maximum UV Index across those same locations is expected to be 2.1. The highest projected maximum is 2.6 in Pottstown at 1:00 PM EST, and the lowest projected maximum is 1.5 in Hockessin at 1:00 PM EST.
57 County Subdivisions in Chester County, Pennsylvania (PA) Maximum UV Index Today
Birmingham - 3.2
Caln - 3.2
Charlestown - 3.2
East Bradford - 3.2
East Brandywine - 3.2
East Caln - 3.2
East Coventry - 3.2
East Fallowfield - 3.2
East Goshen - 3.2
East Marlborough - 3.2
East Nantmeal - 3.2
East Nottingham - 3.3
East Pikeland - 3.2
Easttown - 3.2
East Vincent - 3.2
East Whiteland - 3.2
Elk - 3.3
Franklin - 3.3
Highland - 3.2
Honey Brook - 3.2
Kennett - 3.3
London Britain - 3.3
Londonderry - 3.3
London Grove - 3.3
Lower Oxford - 3.3
New Garden - 3.3
Newlin - 3.2
New London - 3.3
North Coventry - 3.2
Penn - 3.3
Pennsbury - 3.3
Pocopson - 3.2
Sadsbury - 3.2
Schuylkill - 3.2
South Coventry - 3.2
Thornbury - 3.2
Tredyffrin - 3.2
Upper Oxford - 3.3
Upper Uwchlan - 3.2
Uwchlan - 3.2
Valley - 3.2
Wallace - 3.2
Warwick - 3.2
West Bradford - 3.2
West Brandywine - 3.2
West Caln - 3.2
West Fallowfield - 3.2
West Goshen - 3.2
West Marlborough - 3.2
West Nantmeal - 3.2
West Nottingham - 3.3
West Pikeland - 3.2
West Sadsbury - 3.2
Westtown - 3.2
West Vincent - 3.2
West Whiteland - 3.2
Willistown - 3.252 Places in Chester County, Pennsylvania (PA) Maximum UV Index Today
Hockessin - 3.3
North Star - 3.3
Atglen - 3.2
Avondale - 3.3
Berwyn - 3.2
Caln - 3.2
Cambridge - 3.2
Chadds Ford - 3.3
Chesterbrook - 3.2
Christiana - 3.2
Coatesville - 3.2
Cochranville - 3.2
Devon - 3.2
Dilworthtown - 3.2
Downingtown - 3.2
Eagleview - 3.2
Elverson - 3.2
Exton - 3.2
Frazer - 3.2
Glenmoore - 3.2
Hayti - 3.2
Honey Brook - 3.2
Kenilworth - 3.2
Kennett Square - 3.3
King of Prussia - 3.2
Lincoln University - 3.3
Lionville - 3.2
Malvern - 3.2
Mont Clare - 3.2
Nottingham - 3.3
Oaks - 3.2
Oxford - 3.3
Paoli - 3.2
Parkesburg - 3.2
Phoenixville - 3.2
Pomeroy - 3.2
Pottstown - 3.2
Pughtown - 3.2
Royersford - 3.2
Sadsburyville - 3.2
Sanatoga - 3.2
South Coatesville - 3.2
South Pottstown - 3.2
Spring City - 3.2
Stowe - 3.2
Thorndale - 3.2
Toughkenamon - 3.3
Unionville - 3.2
Wayne - 3.2
West Chester - 3.2
West Grove - 3.3
Westwood - 3.2