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

To survive the tropical heat and humidity, vibrant bathing suits and versatile cover-ups are your best friends. —Jessica Chapel, Condé Nast Traveler, 3 May 2026

Others are subjected to frequent rains and oppressive summer humidity. —Brandee Gruener, Southern Living, 3 May 2026

Temperature, humidity and airflow are carefully controlled. —Antonia Mortensen, CNN Money, 2 May 2026

Regretfully, locally foxgloves only last through spring and early summer before succumbing to the heat and humidity of the hot months. —Tom MacCubbin, The Orlando Sentinel, 2 May 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