The National Weather Service issued an updated heat advisory at 3:43 p.m. EDT on Wednesday valid for Thursday between 11 a.m.

Stay cool on Thursday! High heat and humidity will make it feel like the upper 90s to the low 100s. This is hot enough to develop heat-related illnesses.

The heat and humidity build Thursday into Friday, and some areas could flirt with heat warning criteria by Friday afternoon.

The National Weather Service has issued a heat advisory for Berks County on Friday. The advisory, which runs from 10 a.m. to 8 p.m., warns of heat index values of up to 103 degrees. AccuWeather’s ...

Extreme heat is blanketing the Chicago area starting Wednesday, with heat index readings expected to be over 100.The National Weather Service has issued a Heat Advisory, which went into effect for the ...