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

The two-inch lift adds just enough height without sacrificing comfort, and the flexible, water-friendly design holds up in heat, humidity, and even sudden tropical downpours. —Alesandra Dubin, Travel + Leisure, 30 June 2025

Maryland’s heat index soared to 110 degrees, with oppressive humidity making conditions even more dangerous. —Rachel Bustamante, Baltimore Sun, 28 June 2025

Pick up, put down, misplace, leave crusty with sand or warped with humidity. —Christopher Borrelli, Boston Herald, 27 June 2025

This means that no matter how many hot showers are taken, humidity won’t affect the quality of the cabinet. —Alexandra Kay, People.com, 26 June 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