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

Because of the heat, sun exposure, and humidity (which increases sweating and ultimately strips the skin of moisture), getting an adequate amount of hydration in the summer is vital for healthy complexions. —Jessie Quinn, StyleCaster, 6 June 2025

Unfortunately, some items really do need to be protected from temperature fluctuations and extreme summer humidity. —Brandee Gruener, Southern Living, 6 June 2025

Add humidity trays filled with water and pebbles underneath pots. —Erica Browne Grivas, Better Homes & Gardens, 6 June 2025

In comparison, average indoor humidity usually measures in at around 40 to 60 percent. —Iona Brannon, Travel + Leisure, 1 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