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 the air. That sentence was pretty long and hard to follow, so let’s break it down with a nifty metaphor: a jar of marbles.

Relative humidity is a simple concept as weather phenomena go – but it has significant, far-reaching consequences for how we must take care of ourselves on a hot or wet day. Humidity is the amount of moisture in the air around us, and there are three ...

Whether a summer day is great or awful often comes down to the humidity.

In a year when most meteorologists were watching signs of drought — especially across the western half of the country — the middle of the U.S. has been inundated with moisture. It’s not just been hot, but unusually humid — even for this time of year.

We all hate the sticky feeling that hot, humid days bring. But what's the science behind why it makes us so uncomfortable?

Reliable operation of data centers has become essential to nearly all sectors of modern society, including health care, education, government services, power grid operation, banking, defense and disaster relief.

What We’re Tracking A warm start to your Monday with temperatures in the upper 70s to lower 80s. Some locations are already seeing heat indices near 90 early on this morning as well! Warm and humid mornings followed by hot,

The heatwave with dangerously high heat and humidity continues. Some strong to severe thunderstorms are possible tonight and again tomorrow. Heat and thunderstorms are possible each day through the weekend.

Impending Heat Wave A significant and potentially record-breaking heat wave is anticipated to impact vast regions of the United States this week, extending into the Fourth of July holiday. Meteorologists have cautioned that the combination of extreme temperatures and elevated humidity levels could pose serious health risks.