TRENTON, N.J. — A heat advisory is in effect for much of New Jersey and parts of Delaware and Pennsylvania from 11 a.m. Monday through 8 p.m. Wednesday, as heat index values are forecast to soar as high as 104 degrees.
The National Weather Service issued the advisory early Monday morning, warning that “heat index values up to 104 degrees [are] expected” across several counties, including Middlesex, Mercer, Camden, Burlington, Ocean, and Somerset, among others.
Daytime highs across the region are projected to climb steadily through midweek. Monday’s high will reach near 93 degrees with heat index values peaking around 101. Tuesday is expected to be hotter, with a high near 96 and a heat index up to 102. By Wednesday, temperatures could top out at 97 degrees, with a slight chance of afternoon thunderstorms.
Nighttime lows will remain elevated, in the low to mid-70s, offering little overnight relief.
The advisory affects both urban and suburban areas including Trenton, Morristown, Camden, Cherry Hill, and Philadelphia. Authorities are urging residents to use caution, particularly during peak afternoon hours when heat stress is most likely.
A cold front is expected to bring some relief late Wednesday night, when showers and thunderstorms are possible, especially after 8 p.m., with rain chances around 40 percent.
The National Weather Service emphasized that “heat index values up to 104 degrees [are] expected,” underscoring the potential risk of heat-related illness.