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

Its core instrument, the Infrared Sounder, collects temperature profiles and humidity profiles. —Richard Tribou, The Orlando Sentinel, 30 May 2026

So can cutting back on humidity within crawl spaces, bathrooms, laundry rooms, and basements. —Abby Monteil, The Spruce, 29 May 2026

Its digital infrastructure includes over 28,000 sensors that monitor occupancy, lighting, temperature and humidity, enabling continuous optimization of energy use and environmental conditions based on real-time data. —Emanuel Gana, Forbes.com, 28 May 2026

The forecast remains dry, with less humidity through the Orioles game at Camden Yards this evening. —Cutter Martin, CBS News, 28 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