Heat index show 'feel-like' temps topping 100 degrees. What it means

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

Dangerous heat wave hitting Delaware. Here's the latest forecast

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

Heat wave baking Delaware. When will it cool off?

Delaware will face dangerously high temperatures and heat index values as a heat wave takes hold of the region. The First ...

Delaware bracing for dangerously extreme heat. Here's the forecast

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

How hot does it feel outside where I live? What is heat index?

Much of the U.S. is under a blanket of oppressive heat as people prepare for a sweltering July 4th holiday. It’s during times ...

Louisville's heat index expected to climb above 100 degrees this week

A persistent heat wave in Kentucky and southern Indiana is bringing a heat index that's soaring into the triple digits.

Why dew point is how you should measure how humid it is, not relative humidity

Summer is here, and heat and humidity have arrived.

What’s the difference between dew point and relative humidity?

That is because the dew point is a measure of how much water vapor is in the air and relative humidity is a measure of how much water vapor is in the air relative to how much water vapor could be in ...