The National Weather Service issued Extreme Heat Watches and Flood Advisories throughout Illinois. Here's the forecast.

Several central Illinois counties are under an Extreme Heat Watch, with NWS warning of "dangerously hot and humid conditions.

St. Louis faces an Extreme Heat Warning with a high near 97°F and heat index values up to 107, along with potential severe ...

With extreme heat warnings in effect across major U.S. cities, officials urge residents to prioritize safety and hydration ...

Michigan, Wisconsin, Illinois, Indiana, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana, and Alabama—with ...

Record-high minimum temperatures, in which temperatures don't drop in the nighttime hours, are likely across much of the U.S.

NWS issues Extreme Heat Warning in St. Louis, advising precautions against high heat index values up to 116 degrees.

Heat domes are caused by high-pressure systems that trap air near the surface of the Earth, sealing in hot, humid air and ...

A dangerous heat dome is intensifying over the eastern US, putting tens of millions at risk. The National Weather Service ...

Millions of Americans are under weather advisories this week. See which major cities have heat, flood or storm advisories.

The National Weather Service has warned that temperatures inside cars will likely become lethal on Saturday in four states.

When you see the headline that Americans in eighteen states are strongly advised to abstain from drinking alcohol, don’t rush ...