The heat index will break 105 in many areas today, and will exceed 110 in some locations. Some storms will be possible by evening.

St. Louis heatwave prompts Extreme Heat Warning, with risks of heat-related illnesses due to high humidity and temperatures.

Highs will peak in the low-90s Sunday afternoon, but it will feel like 100-110 with the oppressive humidity. An Extreme Heat ...

An extreme heat warning will be in place for all or part of 14 counties in New Jersey. It runs from 10 a.m. to 9 p.m. Friday ...

High temperatures and humidity are expected to produce potentially dangerous heat index values through Monday.

Sunday is bringing sweltering conditions to much of eastern Virginia and northeastern North Carolina, with an Extreme Heat Warning in effect for Hampton Roads and surrounding areas, and a Heat ...

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Today and tomorrow have been designated Weather Aware Days due to the dangerously high temperatures expected across the region. Heat Alerts Inland Areas are under an ...

Much of the U.S. is under extreme heat warnings or advisories while New York, Philadelphia and Washington could feel like 100 degrees or more.

The National Weather Service released an updated extreme heat warning at 12:53 p.m. on Friday in effect until 9 p.m. for ...

Next week brings a threat of dangerously hot temperatures. We have already declared Monday, Tuesday, and Wednesday as First ...

An Extreme Heat Warning is in effect from Sunday 12pm to 8pm Sunday night for all Siouxland. The Extreme Heat Warning has ...