Heat Advisory

Locations Affected

Philadelphia, PA ∙ Trenton, NJ ∙ Camden, NJ ∙ Blackwood, NJ ∙ Masonville, NJ ∙ Leisuretowne, NJ ∙ Wallingford, PA ∙ Collingdale, PA ∙ Roslyn, PA ∙ Richboro, PA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 252 AM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT TUESDAY... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...From noon today to 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting temperatures possible through Wednesday. Tuesday will likely be the hottest day with highs in the mid 90s throughout the urban corridor. 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.

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