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

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 ...

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 ...

Summer is here, and heat and humidity have arrived.

Temperatures are skyrocketing for the third straight day across the Eastern US, but there’s at least three different ways to ...

Most people assume that temperature and relative humidity always move in opposite directions throughout the day: when the air warms up, it becomes drier, and vice versa. This common pattern makes the ...

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

New York state has entered its first heat wave of the summer - with highs expected to soar into the upper 90s and even past ...

Dew point/relative humidity questions come up fairly often and this is a good one. Water vapor in the atmosphere is pretty important for deep-sky observing and photography. The atmosphere can only ...

NORFOLK, Va. — Most summer days, you hear us talk about “humidity” when describing how the air feels. While many people are familiar with the term relative humidity — the percentage of water vapor in ...