Trenton, NJ – Dangerous heat will blanket New Jersey, Delaware, southeast Pennsylvania, and northeast Maryland on Thursday, with heat index values climbing as high as 105 degrees and advisories in effect from 10 a.m. to 8 p.m. Drivers, outdoor workers, and vulnerable residents should take immediate precautions as oppressive humidity and high temperatures set in across the region.
According to the National Weather Service in Mount Holly, a Heat Advisory covers counties including Sussex, Morris, Mercer, Camden, and Atlantic in New Jersey; Philadelphia, Chester, and Bucks in Pennsylvania; New Castle and Sussex in Delaware; and Queen Annes and Kent in Maryland. Heat index values will reach 100–105 degrees, especially in urban centers like Trenton, Newark, Wilmington, and Philadelphia, with the highest risk during the afternoon commute.
Local agencies warn that extreme heat can quickly cause heat exhaustion or heat stroke. Schools may adjust summer program hours, and several municipalities—including Philadelphia and Wilmington—plan to open public cooling centers. The Occupational Safety and Health Administration urges outdoor workers to schedule frequent breaks in shaded or air-conditioned environments, while road crews and utility workers are especially at risk. Seniors, children, and those without reliable air conditioning are urged to check in with neighbors and limit outdoor activity.
Anyone needing relief should seek air conditioning, hydrate often, and avoid strenuous tasks until after sunset. Wear lightweight, loose-fitting clothing, and never leave children or pets unattended in vehicles. Local transit agencies may announce delays or modified service due to equipment stress.
The heat advisory remains in effect until 8 p.m. Thursday, but additional alerts could be issued if the heat persists into Friday. Stay tuned to local officials and the National Weather Service for updates.
