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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 offshore winds could drop the relative humidity into the high teens and low 20s, especially on Wednesday. Gary Robbins, San Diego Union-Tribune, 24 Nov. 2025 Recommended indoor relative humidity levels during winter are typically between 35-45%. Meghan Overdeep, Southern Living, 17 Nov. 2025 Expect winds to be northwest 10 to 20 mph with frequent gusts of 25 to 35 mph and occasional gusts up to 40 mph and relative humidity 20 to 25 percent. Nc Weather Bot, Charlotte Observer, 16 Nov. 2025 The gusty wind, combined with warm temperatures and low relative humidity, will create an elevated risk of wildfires in the afternoon. Kansas City Star, 11 Nov. 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 29 Nov. 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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