humidity

noun

hu·​mid·​i·​ty hyü-ˈmi-də-tē 

yü-

plural humidities

: a moderate degree of wetness especially of the atmosphere compare relative humidity

Synonyms of humidity

• moisture

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

In California, south to southwest winds 10 to 20 mph with gusts around 30 mph and humidity daytime humidities down to 8 to 15%. — Ca Weather Bot, Sacbee.com, 24 Aug. 2026

Those temperatures, combined with drought conditions, low humidity and stiff winds, offered an ideal environment for fire, according to a study issued last month by the World Weather Attribution group. — Sam McNeil, Los Angeles Times, 24 Aug. 2026

Expect plenty of sunshine, comfortable humidity and highs in the low 80s. — Bill Kelly, CBS News, 24 Aug. 2026

The blaze had grown rapidly through the day, driven by gusty winds, low humidity and dry brush. — Martin Goillandeau, CNN Money, 23 Aug. 2026

Word History

First Known Use

15th century, in the meaning defined above

Phrases Containing humidity

• absolute humidity
• relative humidity

Rhymes for humidity

• acidity
• aridity
• avidity
• cupidity
• fluidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity
• rigidity

Kids Definition

humidity

noun

hu·​mid·​i·​ty hyü-ˈmid-ət-ē 

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- 

plural humidities

: a moderate degree of wetness especially of the atmosphere see absolute humidity, relative humidity