Yesterday was the year’s hottest day, and today could be even steamier, before stormy weather ushers in a stretch of cooler days.
Today’s high could edge yesterday’s 91 in Philadelphia, with humidity that could make conditions feel like the mid-90s, according to an excessive heat warning issued by the National Weather Service for the city, its surrounding counties on both side of the Delaware River, as well as the Wilmington and Trenton areas.
"Take extra precautions if you work or spend time outside," the warning advises. "When possible, reschedule strenuous activity to early morning or evening. ... Wear lightweight and loose-fitting clothing ... Drink plenty of water."