A combination of high temperatures and humidity on Wednesday has prompted a Heat Advisory for a large part of the region.
Temperatures are expected to rise into the 90s with highs reaching towards the century mark at the height of the day, according to the NBC10 First Alert Weather Team.
"The humidity will be on the rise, the temperatures will be going up, it's going to be an uncomfortable day for sure," NBC10 First Alert Weather Meteorologist Tedd Florendo said.
Temperatures were already hovering around 80 degrees by 5 a.m. offering a preview for the day ahead.
The heat and humidity combination has prompted the National Weather Service to issue a Heat Advisory from noon until 7 p.m. on Wednesday for Philadelphia, Delaware, Camden, Gloucester, Mercer and New Castle counties. Parts of Bucks, Montgomery, Chester and Burlington counties are also included.
Officials are warning people prone to heat related illnesses to stay indoors and limit strenuous activities. Those who are working and playing outside are reminded to save the most vigorous activities for the early and late part of the day.
Camden County in New Jersey is opening cooling centers to offer a respite for those who do not have air conditioning. Officials say residents should contact their individual municipality to find the nearest location to them.
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Philadelphia health officials tell NBC10.com the city only opens cooling centers when a Heat Warning is issued.
The high heat could also cause thunderstorms to form late in the day on Wednesday.
Be sure to check the NBC10 First Alert Weather App throughout the day for the latest on conditions.