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

Take, for instance, the free-form rooftop pool which is shaded by native trees and blossoming plants and is the perfect spot to cool off from Thailand’s no-joke humidity. — Condé Nast, cntraveler.com, 7 Oct. 2026

Aganovic told New Beauty that shoppers are increasingly drawn to fragrances that capture an ephemeral environment, naming clouds, fresh air after a storm and humidity-laden forests as reference points. — Lauren Jarvis-Gibson, Sacbee.com, 7 Oct. 2026

Temperatures will remain in the upper 80s early next week, with a noticeable increase in humidity. — CBS News, 7 Oct. 2026

In a room, the large array lowered humidity from 38 to 32 percent in 15 minutes, though that is only an early result, not proof of lasting capacity. — New Atlas, 4 Oct. 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