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

Its new coach, Oswaldo Vizcarrondo, was encouraged by his team’s performance, adding that the heat and humidity took its toll on the players in the second half. —Miami Herald, 7 June 2026

There must have been something in the air—in addition to the beastly heat and humidity—in Paris these past two weeks. —Lev Akabas, Sportico.com, 7 June 2026

Rain will linger into Thursday, with cooler highs in the 70s and less humidity. —Lisa Meadows, CBS News, 7 June 2026

Their concerns center on FIFA’s use of the Wet Bulb Globe Temperature (WBGT), which measures the combined effects of air temperature, humidity, wind and sunlight on the body. —Emile Nuh, CNN Money, 7 June 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