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 air is forecast to be extremely dry, with relative humidities under 10% through Friday. Rong-Gong Lin Ii, Los Angeles Times, 22 Jan. 2025 In combination with critically dry vegetation and relative humidity down to 2%, elevated to locally critical fire weather conditions will continue through late Thursday. Raul A. Reyes, Newsweek, 22 Jan. 2025 On Tuesday, warm weather with afternoon temperatures in the high 60s to low 70s, as well as low relative humidity levels in the teens and single digits, will add to the high fire risk. Amy Graff, New York Times, 19 Jan. 2025 Use a hygrometer to track your home's relative humidity. Kamron Sanders, Better Homes & Gardens, 15 Jan. 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

Dictionary Entries Near relative humidity

Cite this Entry

“Relative humidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/relative%20humidity. Accessed 8 Feb. 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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