relative humidity

noun

: the ratio of the amount of water vapor actually present in the air to the greatest amount possible at the same temperature

Examples of relative humidity in a Sentence

Recent Examples on the Web

Wildfires explained by Ginger Zee Millions in the Southwest are on alert for fire weather through the end of the week due to extreme or critical risks posed by warmer temperatures, high winds and a low relative humidity, officials said. —Shawnie Caslin Martucci, ABC News, 16 Apr. 2025

Wind gusts are expected to be 25-30 mph, relative humidity at 25-35% and rapidly drying fuels. —Garfield Hylton, Orlando Sentinel, 20 Mar. 2025

These winds will be accompanied by low relative humidity values between 15 and 25 percent. —Nc Weather Bot, Charlotte Observer, 21 Mar. 2025

Minimum relative humidity values will be around 25 to 35 percent combined with southerly winds of 10 to 15 mph with gusts near 20 mph. —Thomas G. Moukawsher, MSNBC Newsweek, 25 Apr. 2025

Word History

First Known Use

1819, in the meaning defined above

Rhymes for relative humidity

• acidity
• aridity
• avidity
• cupidity
• fluidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity
• rigidity

Kids Definition

relative humidity

noun

: the amount of water vapor actually present in the air compared to the greatest amount possible at the same temperature

Medical Definition

relative humidity

noun

: the ratio of the amount of water vapor actually present in the air to the greatest amount possible at the same temperature compare absolute humidity