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

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

Delaware heat wave could push highs near 100 with steamy humidity. Here’s when temperatures finally drop.

Today's extreme heat for the World Cup match between Portugal and Croatia is expected exceed world soccer union guidelines ...

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.

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 ...

Delaware will feel a dangerous heat wave starting Wednesday as temperatures start surging into triple digits. The National ...

The Aspen Acres fire burning in southern Colorado raced across more than 17 square miles overnight, forcing ...

As summer temperatures rise, dairy cows are at greater risk for heat stress. Heat-stressed cows suffer from reduced dry matter intake, reducing milk production. Farmers may also notice reduced ...

Extreme heat warnings have been issued for the entire state July 1. An extreme heat warning for New Castle County will take ...

COLUMBUS, Ohio — A major heat wave is expected to grip much of the United States, including Ohio, over the next week. High ...