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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The weather service reported wind gusts of 25 to 35 mph with relative humidity at about 10%. Seema Mehta, Los Angeles Times, 31 Mar. 2025 Winds are forecasted to be southwest 10 to 20 mph with gusts up to 30 mph and relative humidity as low as 19 percent. Nc Weather Bot, Charlotte Observer, 22 Mar. 2025 Winds of 15 to 25 miles per hour, with gusts potentially reaching higher speeds, are forecast as relative humidity levels are to drop to between 10 percent and 20 percent, with temperatures climbing into the 70s and 80s. Thomas G. Moukawsher, Newsweek, 21 Mar. 2025 When the ground and vegetation are dry and the air has low relative humidity, high winds can also spread wildfires out of control. Chris Nowotarski, The Conversation, 20 Mar. 2025 See All Example Sentences for relative humidity

Word History

First Known Use

1819, in the meaning defined above

Time Traveler
The first known use of relative humidity was in 1819

Browse Nearby Words

Cite this Entry

“Relative humidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/relative%20humidity. Accessed 13 Apr. 2025.

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

More from Merriam-Webster on relative humidity

Last Updated: - Updated example sentences
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