39°55'N / 75°33'V / Høyde 77 m / 12:21 19.05.2026, America/New_York (UTC-4)
fra: 19.05.2026, 03:26
til: 19.05.2026, 16:30
* WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through today, with maximum heat indices of 95 to near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat.
Chester
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
NWS Mount Holly NJ
19.05.2026, 03:26fra: 19.05.2026, 03:26
til: 19.05.2026, 16:30
* WHAT...Heat index values up to 98 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat.
Chester,Eastern ChesterDrink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.NWS Mount Holly NJ19.05.2026, 03:26
fra: 18.05.2026, 15:45
til: 20.05.2026, 00:00
The Delaware Valley Regional Planning Commission has issued a code orange air quality alert Tuesday for The Philadelphia Metro area. A code orange air quality alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children...people suffering from asthma... heart disease or other lung diseases...and the elderly. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles...visit http://www.phila.gov/health/units/ams/
Chester,Eastern ChesterNWS Mount Holly NJ18.05.2026, 15:45