Chicagoans are stepping up to help one another during another heat wave in the city.

Temperatures will soar to the upper 80s and low 90s Thursday as dew points climb in many areas, making the air feel thick and ...

Northeast Ohio is about to crank up the heat, with dangerous conditions expected Thursday as both temperatures and humidity ...

A heat advisory goes into effect Thursday for parts of Connecticut where heat index values will soar past 100 degrees on ...

Thursday: A slight chance of showers and thunderstorms after 2 p.m. Sunny, with a high near 94. Heat index values as high as ...

The heat will be most severe along and southeast of the I-99/US-220 corridor, where heat index values are likely to exceed ...

With heat index values expected to top 110 degrees, Knox County residents are urged to take precautions. Here's where to find ...

Temperatures in Milwaukee could reach as high as 94 degrees July 23 with a heat index of 105 degrees, and the heat is likely ...

How is the heat index calculated, and why is it more important than the air temperature during some heat waves?

While Texas bakes under sweltering conditions, it's far from alone. Millions are under threat of extreme heat this week.

Meteorologists expect parts of Kentucky to endure a stretch of days with high temperatures and dew points starting July 23.