air mass
noun
: a body of air extending hundreds or thousands of miles horizontally and sometimes as high as the stratosphere and maintaining as it travels nearly uniform conditions of temperature and humidity at any given level
Examples of air mass in a Sentence
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An Arctic air mass from Canada is bringing brutally cold temperatures to Michigan and the Northeast.
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Brandi D. Addison, Freep.com, 6 Feb. 2026
When satellite observations are blended with modeling systems like in this instance, the result captures the shape and movement of the air mass across vast areas, filling gaps between weather stations and improving situational awareness for decision makers.
—Kenna Hughes-Castleberry, Space.com, 4 Feb. 2026
Experts say a lingering cold air mass across the Midwest could keep temperatures below historical averages well into early spring.
—Brandi D. Addison, IndyStar, 3 Feb. 2026
Don’t worry, though, a warming trend is expected through the afternoon as the arctic air mass shifts northeast, taking the freezing temperatures with it.
—Newsroom Meteorologist, Austin American Statesman, 1 Feb. 2026
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Brandi D. Addison, Freep.com, 6 Feb. 2026
When satellite observations are blended with modeling systems like in this instance, the result captures the shape and movement of the air mass across vast areas, filling gaps between weather stations and improving situational awareness for decision makers.
—Kenna Hughes-Castleberry, Space.com, 4 Feb. 2026
Experts say a lingering cold air mass across the Midwest could keep temperatures below historical averages well into early spring.
—Brandi D. Addison, IndyStar, 3 Feb. 2026
Don’t worry, though, a warming trend is expected through the afternoon as the arctic air mass shifts northeast, taking the freezing temperatures with it.
—Newsroom Meteorologist, Austin American Statesman, 1 Feb. 2026
See All Example Sentences for air mass
Cite this Entry
“Air mass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/air%20mass. Accessed 14 Feb. 2026.
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