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 smogBecause California’s smog is so bad, the federal government has, for more than 50 years, allowed the state to set its own emissions limits, resulting in more efficient vehicles and the nation’s most aggressive push toward electric vehicles.—Francine Kiefer, Christian Science Monitor, 2 June 2025 In the wake of the second World War, the relentless creep of light pollution, smog from nearby London and the vibrations and magnetic interference from railway lines had rendered Greenwich an unfeasible location for delicate astronomical observation.—Anthony Wood, Space.com, 22 June 2025 Opponents say the supercomputing center is stressing the power grid, and that the turbines emit smog and carbon dioxide, pollutants that cause lung irritation such as nitrogen oxides, and the carcinogen formaldehyde, experts say.—Adrian Sainz, Los Angeles Times, 17 June 2025 Kilns are often close to densely populated areas, adding to the smog that comes from city life.—Jonathan Lambert, NPR, 18 May 2025 See All Example Sentences for smog
Along with other adjustments made with tools like Photoshop, the end result is a shockingly precise view of the galaxy—the yellow mist around the spiral is actually tens of thousands of stars.
—
Carlyn Kranking,
Smithsonian Magazine,
14 July 2025
Staying in shaded areas, using a cool mist and fan, keeping hydrated, and wearing light colored and loose-fitting clothing can all help keep a child cooler.
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