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

• damp
• dampness
• moistness
• 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

In the summer, though, prepare for heat and humidity, as well as lots of sunshine. —Kathleen Peddicord, Forbes.com, 16 May 2025

And this Revlon blow dryer brush is a must for anyone that suffers from frizz in high heat and humidity (just take it from me!). —Clara McMahon, People.com, 16 May 2025

When taking a shower or bath, use a bathroom fans to remove heat and humidity. —Greta Cross, USA Today, 16 May 2025

Environmental factors: Heat and humidity can speed up ripening, creating pressure inside bananas that can cause their skin to burst. —Katie Rosenhouse, Southern Living, 15 May 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