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
Recent Examples on the WebThe report says wildfires produce toxic types of particulates, some of them carcinogenic, that can be up to 10 times more harmful to people than other sources of air pollution like auto smog or smokestack emissions.—Thomas Elias, The Mercury News, 12 July 2024 New electrification rules for a four-county area, when fully implemented, will slash nitrogen oxide pollution by 5.6 tons per day – comparable to cutting half of all smog emissions from the region’s cars.—Cameron Pugh, The Christian Science Monitor, 5 Aug. 2024 However, the new emission reduction rule can become effective only if the U.S. Environmental Protection Agency signs off on the region’s smog plan and approves the state regulations for locomotives and truck fleets.—Tony Briscoe, Los Angeles Times, 2 Aug. 2024 The smog in Beijing on the eve of the Games was godawful, and wearing a thin piece of cloth—or maybe a gas mask—seemed like a smart idea.—Frederick Dreier, Outside Online, 26 July 2024 See all Example Sentences for smog
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'smog.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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