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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
Temperatures near the Tracy airport were in the low 70s, with relative humidity in the mid-50s, according to National Weather Service meteorologist Nathan Rick.
—Summer Lin, Los Angeles Times, 3 June 2024
The relative humidity will also drop to around 15% to 19% by Sunday.
—Summer Lin, Los Angeles Times, 10 May 2024
Heat index can be determined by air temperature and relative humidity.
—Brayden Garcia, Fort Worth Star-Telegram, 7 May 2024
While rain is not likely, the relative humidity will be high early in the morning, estimated to be 97% at 7 a.m.
Additionally, skies will be mostly cloudy throughout the entire day and winds will range from 6 to 9 mph.
—Aaron Valdez, The Enquirer, 4 May 2024
See all Example Sentences for relative humidity
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'relative humidity.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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 12 Jun. 2024.
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
Britannica.com: Encyclopedia article about relative humidity
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