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

The linen shirt stays breathable even in peak humidity and layers easily over swimwear, while the stretch shorts offer structure without stiffness. —Paris Wilson, Travel + Leisure, 10 May 2026

Plants thrive in the heat and humidity of Southern gardens when watered regularly. —Kim Toscano, Southern Living, 10 May 2026

The sun is blazing and the humidity is growing across South Florida. —Scott Withers, CBS News, 9 May 2026

Hantavirus in Argentina usually develops in rural and peri-urban areas, in the presence of crops, tall weeds, humidity, or a subtropical climate. —Gonzalo Zegarra, CNN Money, 9 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