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.
Past studies on former World Cup venues have highlighted the negative effects for players who compete in high relative humidities, including in Brazil in 2014. Julia Jacobo, ABC News, 28 Nov. 2024 Temperatures in the hottest interior places were expected to run between 97 and 102 degrees, while the relative humidity in those spots was expected to be at least 60%. Rick Hurd, The Mercury News, 7 Aug. 2024 The relative humidity in Oakland was 90% at 5 a.m. Thursday, according to the weather service. Jason Green, The Mercury News, 17 Oct. 2024 The heat index value, which represents how hot the air feels by taking into account relative humidity, could go as high as 112, according to the National Weather Service. The Arizona Republic, 26 July 2024 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 4 Dec. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!