Definition of smognext
as in haze
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

Synonyms & Similar Words

Relevance

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of smog 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 Ozone, a key ingredient of smog, is particularly dangerous for people with asthma and other lung diseases, especially children. Andrea Thompson, Scientific American, 14 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
Recent Examples of Synonyms for smog
Noun
  • But luckily for everyone marveling at JWST’s crisp snapshots of faraway galaxies, this dense haze is totally invisible.
    Joseph Howlett, Scientific American, 25 Jan. 2026
  • Directed by Joel Thompson, the centuries-old tale of demons, magic spells and a deal with the devil is brought to life with special effects and theatrical stage haze.
    Philip Potempa, Chicago Tribune, 22 Jan. 2026
Noun
  • In extremely dense fog where visibility is near zero, the best course of action is to first turn on your hazard lights, then simply pull into a safe location such as a parking lot of a local business, and stop.
    CA Weather Bot, Sacbee.com, 3 Feb. 2026
  • Cold front Tuesday Clouds will dominate Central Texas on Tuesday morning, along with areas of patchy to dense fog that could reduce visibility during the morning commute, especially west of Austin, where winds will be lighter.
    Newsroom Meteorologist, Austin American Statesman, 3 Feb. 2026
Noun
  • This also limits automatic cloud activity.
    Kurt Knutsson, FOXNews.com, 3 Feb. 2026
  • Reports also said the military was concerned that Microsoft was moving file storage online to the cloud — the standard version of LibreOffice is not cloud-based.
    Kelvin Chan, Los Angeles Times, 3 Feb. 2026
Noun
  • Athena Club’s latest launch—body mists—perform really well given their under-$20 price tag.
    Reece Andavolgyi, InStyle, 4 Feb. 2026
  • Respiratory benefits The hot mist that forms when water hits a shower steamer may provide respiratory benefits.
    BestReviews, Chicago Tribune, 30 Jan. 2026

Browse Nearby Words

Cite this Entry

“Smog.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/smog. Accessed 8 Feb. 2026.

More from Merriam-Webster on smog

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!