The temperature on any given summer day may be in the 80s or 90s. So why does it feel so much hotter and oppressive at times? That's the heat index doing its thing. Here's how it works: What is the ...

OMAHA, Neb. (WOWT) - During the summer months, I’m sure you’ve heard – or have said yourself - “It’s not the heat; it’s the humidity!”. Or when describing the extreme desert climate, “…but it’s a dry ...

Across much of the world, hotter days are no longer arriving alone. The air itself is changing, sometimes turning from dry ...

The heat index, or apparent temperature, combines air temperature and humidity to indicate how hot it feels to the body. High humidity slows sweating, the body's natural cooling system, making ...

Imagine you’re sitting among friends on the porch with a big pitcher of ice cold lemonade. The heat is searing and the air is still and stifling. It’s almost hard to breathe. You look to your friends ...