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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These include , low relative humidity, dry fuels and warm temperatures. Anna Skinner, Newsweek, 7 Feb. 2025 Meanwhile, a Red Flag Warning is in effect in Huerfano and Las Animas counties, reflecting relative humidity as low as 10%, daytime temps of 70 degrees or higher and punishing winds that could gust up to 60 mph. Max Levy, The Denver Post, 7 Feb. 2025 The index tracks temperature, relative humidity and wind speeds, all factors that contribute to the likelihood of fire. Evan Bush, NBC News, 28 Jan. 2025 Gusts from the east were at one point blowing at nearly 30 mph around Otay Mountain and the relative humidity was just 2 percent. Alex Riggins, San Diego Union-Tribune, 24 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 19 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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