What Is Humidity?

By Charlie Neese

Humidity is a measure of moisture in the air, specifically that of water vapor, which is water in its gaseous state. Find out how to measure absolute humidity and how to determine the ratio of dry air to water vapor with help from a meteorologist in this free video on understanding weather.

About the Author

Charlie Neese is an Emmy Award-winning television meteorologist and severe weather safety expert based in Nashville, Tenn.