humidity

noun

hu·​mid·​i·​ty hyü-ˈmi-də-tē How to pronounce humidity (audio)
yü-
plural humidities
Synonyms of humiditynext
: a moderate degree of wetness especially of the atmosphere compare relative humidity

Synonyms of humidity

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Examples of humidity in a Sentence

the humidity of the region It's not the heat that will get you—it's the humidity. The temperature is 67 degrees with humidity at 75 percent. an area of low humidity
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.
Experts agree that even lower temperatures can pose health threats to vulnerable populations, especially when combined with high humidity. — Drew Kann, AJC.com, 4 Aug. 2026 The fire danger has now shifted further east across the Intermountain West and Plains where several states from Montana to Nebraska are under Red Flag Warnings due to strong winds and low humidity. — Melissa Griffin, ABC News, 3 Aug. 2026 Hiking is increasing in popularity in Malaysia despite the fact that around half of the country’s total land area is carpeted in tropical forest, in which high temperatures and humidity are common. — Jack Guy, CNN Money, 3 Aug. 2026 So there are doctors, there are nurses, there are health-care workers that are donning hazmat suits basically, and are in 80 percent humidity in the summer heat. — Adam Harris, The Atlantic, 3 Aug. 2026 See All Example Sentences for humidity

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of humidity was in the 15th century

Phrases Containing humidity

Rhymes for humidity

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Browse Nearby Words

humidistat
humidity
humidly
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Cite this Entry

“Humidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/humidity. Accessed 6 Aug. 2026.

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Kids Definition

humidity

noun
hu·​mid·​i·​ty hyü-ˈmid-ət-ē How to pronounce humidity (audio)
yü-
plural humidities
: moisture, dampness
especially : the amount of moisture in the air

Medical Definition

humidity

noun
hu·​mid·​i·​ty hyü-ˈmid-ət-ē, yü- How to pronounce humidity (audio)
plural humidities
: a moderate degree of wetness especially of the atmosphere see absolute humidity, relative humidity

More from Merriam-Webster on humidity

Nglish: Translation of humidity for Spanish Speakers

Britannica.com: Encyclopedia article about humidity

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