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

Rising global temperature coupled with more rainfall and humidity -- leading to standing water pools that serve as breeding grounds for mosquitoes -- could increase the number of cases. — Mary Kekatos, ABC News, 30 Sep. 2026

The PantheraCams are also built to withstand heat, humidity, and even freezing temperatures, though not every threat. — Moná Thomas, PEOPLE, 29 Sep. 2026

Paul John’s single malt spent nearly nine years in this barrel, which is quite long given the temperature and humidity in that part of India. — Jonah Flicker, Robb Report, 29 Sep. 2026

Temperatures Tuesday are expected to reach the mid- to upper 80s, with higher humidity making conditions feel increasingly steamy. — Lissette Gonzalez, CBS News, 29 Sep. 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