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

Further south, anomalously warm ocean temperatures in Southern California will add a usually dangerous humidity factor. — Sean MacAday 27, Sacbee.com, 27 July 2026

Beads of water sprang free from the humidity and dazzled in the afternoon sun, one last flash of light before the storm arrived. — Brian Truitt, USA Today, 27 July 2026

Many teams start these practices early to try to avoid — as much as possible — the heat and humidity. — Steve Fryer, Oc Register, 27 July 2026

Heat and humidity combine in the Kansas City area for a potentially dangerous Sunday and Monday. — Eleanor Nash, Kansas City Star, 26 July 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