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

Once in the air, the dandelion drones would transmit data via radio signals, collecting readings on humidity, temperature and eventually creating a blueprint of the entire tunnel system. —Tom Brown, Space.com, 25 May 2026

When exposed to humidity from the air or human skin, this architecture enables ion movement within the material, which drives the electrical output. —Aman Tripathi, Interesting Engineering, 24 May 2026

The country recorded a remarkable 98% clear-sky frequency and just 12% humidity at sunset hour — among the best scores in the entire index. —Jamie Carter, Forbes.com, 24 May 2026

Also, some houseplants are native to tropical regions and require high humidity to thrive, which can be difficult to achieve outdoors in certain climates. —Samantha Johnson, Martha Stewart, 24 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