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

• 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

With temperatures stretching well over 100 degrees Fahrenheit on the race surface and humidity upwards of 80 percent, the environs of the Formula 1 circuit in Singapore are among the most punishing on the calendar. —Eileen Falkenberg-Hull, MSNBC Newsweek, 3 Oct. 2025

Given the temperatures and humidity, the cockpit can feel like a sauna, Russell said. —Madeline Coleman, New York Times, 2 Oct. 2025

But in Houston [where SirDavis is finished, blended, and bottled], the high humidity means alcohol evaporates faster than water, so proof actually drops, similar to Scotland. —Hali Bey Ramdene, Bon Appetit Magazine, 1 Oct. 2025

Heat and humidity can wreak havoc on their circuitry and batterie. —Mary Cornetta, Better Homes & Gardens, 1 Oct. 2025

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