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 fuel is currently restricted in the summer months due to smog concerns, though that restriction is frequently waived.—Garrett Downs, CNBC, 22 Jan. 2026 That smog can have far-reaching consequences.—Sarah Henry, AZCentral.com, 18 Jan. 2026 The air district cited concentrations of particulate matter — commonly known as smog — to be elevated to a level approaching unhealthy for those with respiratory or other health issues.—Rick Hurd, Mercury News, 15 Jan. 2026 Emissions of nitrogen oxide, also known as NOx, form smog and soot that is harmful to human health and linked to serious heart and lung diseases.—Matthew Daly, Los Angeles Times, 14 Jan. 2026 See All Example Sentences for smog
Whether hiking through bright sunlight, overcast skies, or snowy conditions where the sun glare is reflected, Knockaround does an excellent job of reducing the haze and glare.