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 assessment indicates that moisture-meter readings in the drywall fall within or below the 5%-12% range generally considered acceptable under normal indoor humidity conditions. — CBS News, 11 Nov. 2026

How body exfoliation works As temperatures drop and humidity falls, water evaporates from the outermost layer of skin in a process called transepidermal water loss. — Hanna Wickes, Fort Worth Star-Telegram, 11 Nov. 2026

The boxes will go into caves under Jackson County — the constant temperature and humidity help to protect the fragile objects. — Eleanor Nash, Kansas City Star, 10 Nov. 2026

Climate change impacts insects The researchers concluded that the lipid barrier protecting Drosophila melanogaster during metamorphosis cannot prevent lethal dehydration when high temperatures and low humidity occur together. — Maria Mocerino, Interesting Engineering, 7 Nov. 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