Michigan's heat wave this week will feel even warmer because of high humidity. Here's how the heat index works.

Heat can be dangerous, but health experts say there are ways to manage the threat. Scorching temperatures, especially ...

What is heat index and how does it affect how stifling excessive heat feels?

The heat index shows how humidity makes hot days feel hotter, and why direct sun can push dangerous conditions even higher.

New York state has entered its first heat wave of the summer - with highs expected to soar into the upper 90s and even past ...

Heat can be dangerous, but health experts say there are ways to manage the threat. Scorching temperatures, especially ...

Exercising outside in high temps can be a health hazard. Here's how to read your local index, according to a doctor, so you can stay safe.

As summer temperatures rise, dairy cows are at greater risk for heat stress. Heat-stressed cows suffer from reduced dry ...

The metric of how hot the air actually feels has roots in a 1979 journal paper called “The Assessment of Sultriness.” By Andy Newman In recent days, you may have seen or heard many mentions of a ...

Mapping heat and flood risks part of mission at State Climate Office at George Mason University under budget that took effect ...