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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The unusually warm temperatures, combined with muggy air, dew points in the mid-60s, and other atmospheric ingredients, will create an unstable air mass that can fuel severe storms.
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Kansas City Star, 10 Mar. 2026
With little cloud cover and only a weak cold front approaching, that air mass heats efficiently under the February sun, allowing temperatures in places along the Texas border to climb well above normal for winter.
—Newsroom Meteorologist, Houston Chronicle, 26 Feb. 2026
If, in the following days, increasing moisture and a sticky feel to the atmosphere are accompanied by fog or overcast skies, this can signal the approach of a cold front with a cooler air mass behind it.
—Newsroom Meteorologist, Austin American Statesman, 24 Feb. 2026
Overnight Tuesday, a drier and more stable air mass will descend upon the state, creating a near-zero chance of rain throughout the week and into the weekend.
—Bill Kearney, Sun Sentinel, 16 Feb. 2026
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Kansas City Star, 10 Mar. 2026
With little cloud cover and only a weak cold front approaching, that air mass heats efficiently under the February sun, allowing temperatures in places along the Texas border to climb well above normal for winter.
—Newsroom Meteorologist, Houston Chronicle, 26 Feb. 2026
If, in the following days, increasing moisture and a sticky feel to the atmosphere are accompanied by fog or overcast skies, this can signal the approach of a cold front with a cooler air mass behind it.
—Newsroom Meteorologist, Austin American Statesman, 24 Feb. 2026
Overnight Tuesday, a drier and more stable air mass will descend upon the state, creating a near-zero chance of rain throughout the week and into the weekend.
—Bill Kearney, Sun Sentinel, 16 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 13 Mar. 2026.
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