Extreme Heat Watch

Locations Affected

Philadelphia, PA ∙ Allentown, PA ∙ Trenton, NJ ∙ Reading, PA ∙ Camden, NJ ∙ Bethlehem, PA ∙ Wilmington, DE ∙ Vineland, NJ ∙ New Brunswick, NJ ∙ Perth Amboy, NJ

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 211 PM EDT Sun Jun 28 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH SATURDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 105 degrees possible at lower elevations during the daytime hours. Heat indices up to 100 degrees possible across the Pocono Plateau. * WHERE...Carbon and Monroe Counties. * WHEN...From Wednesday afternoon through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Very warm low temperatures in the low to mid 70s at night will not offer much relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

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