relative humidity

noun

: the ratio of the amount of water vapor actually present in the air to the greatest amount possible at the same temperature

Examples of relative humidity in a Sentence

Recent Examples on the Web

In 2023, Tretyakov Gallery director Elena Pronicheva stated that Trinity should be stored at a temperature of 19 degrees Celsius and a relative humidity of 50–55%. — News Desk, Artforum, 16 Sep. 2026

Winds are expected to be winds gusts of 20 to 30 mph, locally up to 40 for the higher ridges and relative humidity 20 to 30%. — Ca Weather Bot, Sacbee.com, 11 Sep. 2026

In addition, strong/erratic wind gusts will be likely near any passing thunderstorms or showers and relative humidity minimum humidities 12 to 25%. — Southern California Weather Report, Daily News, 28 Aug. 2026

That's what the temperature feels like to the human body when relative humidity is combined with the air temperature. — Sadie Babits, NPR, 25 Aug. 2026

Word History

First Known Use

1819, in the meaning defined above

Rhymes for relative humidity

• acidity
• aridity
• avidity
• cupidity
• fluidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity
• rigidity

Kids Definition

relative humidity

noun

: the amount of water vapor actually present in the air compared to the greatest amount possible at the same temperature

Medical Definition

relative humidity

noun

: the ratio of the amount of water vapor actually present in the air to the greatest amount possible at the same temperature compare absolute humidity