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 ...

During the hot, humid summer months, meteorologists often discuss the heat index instead of the actual air temperature. But how is the heat index calculated, and why is it more important than the air ...

A temperature of over 100 degrees doesn’t paint the whole picture when it comes to determining how hot it feels. The heat index does. What is the heat index? “It is essentially what temperature feels ...

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

Very hot conditions are forecasted for most of the upcoming week. With that forecast we’ll be hearing the terms “heat index”, “heat risk”, and even “Wet Bulb Globe Temperature” from meteorologists on ...

It’s often said that it’s not the heat that gets you; it’s the humidity. We had our first serving of the uncomfortable and ...