an atmospheric condition in which suspended particles in the air rob it of its transparency
the city's smog was once so bad that darkness often prevailed, even at noon
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Recent Examples of smogThe report graded communities based on levels of ground-level ozone (smog), year-round fine particulate matter (PM2.5), and short-term spikes in PM2.5, also known as soot.—Ross Rosenfeld, MSNBC Newsweek, 23 Apr. 2025 Fishermen battling with changing oceans chart new course after Trump’s push to deregulate
Jay Leno pushes bill to end smog checks in California for vehicles 35 years or older
A church dedicated to helping the poor and suffering can’t ignore the ravages of an overheating planet.—Mark Gongloff, Mercury News, 11 May 2025 As the plane began its descent into Baiyun International Airport—the busiest airport in China, handling more than 76 million passengers in 2024—the greenery gave way to concrete and skyscrapers, and the fog started to look a lot more like smog.—Bonnie Tsui, AFAR Media, 6 May 2025 Through aerial photography and emissions information from the turbine manufacturers' specifications sheets, SELC was able to estimate the amount pollution such as nitrogen oxides, or NOx, which causes smog.—Jeff Young, MSNBC Newsweek, 6 May 2025 See All Example Sentences for smog
That cut fastball in the heart of the strike zone is the one Cal Raleigh hit through the haze to the seats beyond left field to give the Mariners the lead.
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Kevin Acee,
San Diego Union-Tribune,
17 May 2025
And so, aviation mayhem ensues, as Lucas fights off a coterie of bad guys through a haze of drugs and liquor.
The views of rooftops, treetops, and (if the fog cooperates) the Bay are nothing short of cinematic.
—
David Hochman,
Forbes.com,
18 May 2025
Zero visibility strategy: In cases of near-zero visibility due to dense fog, activate your hazard lights and seek a safe spot, like a nearby business parking lot, to pull over and stop.
Then there’s the ocean merging with the western clouds.
—
Maura Fox,
San Diego Union-Tribune,
24 May 2025
The resulting clouds can act as insulating layers in the atmosphere, often helping to reduce surface temperatures and also the extent of sea ice coverage around Antarctica.
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