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

With humidity, feels like temperatures are forecast to reach 100 degrees. —Elainie Colton, The Orlando Sentinel, 14 June 2026

High humidity and warm temperatures can shorten an onion’s shelf life. —Stacey Lastoe, Southern Living, 14 June 2026

The weather Saturday and Sunday looks absolutely spectacular with plenty of sunshine with highs in the mid to upper 80s with low humidity. —Steven Sosna, CBS News, 14 June 2026

Managing humidity and access points are critical elements in how to keep pests out, so Terminix can help with prevention before the need for pest control. —Nick Perry, USA Today, 14 June 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