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
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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 These winds will be accompanied by low relative humidity of 20 to 25 percent. Nc Weather Bot, Charlotte Observer, 22 Mar. 2025 The critical fire conditions are a result of warm temperatures combined with strong winds in excess of 15 mph and relative humidity of 25% to 30%. Kathryn Prociv, NBC news, 26 Mar. 2025 Still, relative humidity values are expected to fall below 25 percent outside of the mountains and around 25 percent in the mountain valleys, with higher values in the higher elevations. Nc Weather Bot, Charlotte Observer, 23 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

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Cite this Entry

“Relative humidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/relative%20humidity. Accessed 30 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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