Humidity: Quick Facts

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Last updated

Nov. 9, 2026

News •

You're not imagining it, the NT's build-up is worse than normal • Nov. 5, 2026, 3:58 PM ET (ABC News (Australia))

Have a fall cold? Blame the weather, doctor says • Oct. 19, 2026, 7:01 AM ET (Allentown Morning Call)

Photos

Map of the United States color-coded to show average relative humidity percentages at local noon in July. The western states, especially Nevada and surrounding areas, have the lowest humidity (under 20%), while humidity increases moving eastward, reaching 70% or higher in the Southeast and Northeast. The Midwest and Great Plains show moderate humidity levels between 40% and 60%.

Infographic titled Corn Sweat explains how corn increases humidity through evapotranspiration, showing that U.S. corn releases billions of gallons of water into the air. Includes a map highlighting the Corn Belt states and a corn illustration for scale.

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Topics

mixing ratio Dew Absolute humidity Specific humidity Relative humidity What Is Relative Humidity?Climate humidifier humidity index aridity Temperature inversion Weather forecasting weather modification 16 Questions About Earth’s Atmosphere and Weather Answered Fog Cloud Frost Precipitation Air mass What’s the Difference Between Weather and Climate?

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