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  2. Air pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_in_the...

    Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.

  3. List of most-polluted cities by particulate matter concentration

    en.wikipedia.org/wiki/List_of_most-polluted...

    The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively). [1 ...

  4. The Clean Air Campaign - Wikipedia

    en.wikipedia.org/wiki/The_Clean_Air_Campaign

    The Clean Air Campaign was a not-for-profit organization that motivated Georgians to take action to improve air quality and reduce traffic congestion. The organization was formed in 1996 by government, business, civic, health, environmental and educational organizations to address traffic congestion and air quality issues in the metro Atlanta region.

  5. Environmental issues in the United States - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues_in...

    Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems. Health problems attributed to air pollution include premature death, cancer, organ failure, infections, behavioral changes, and other diseases.

  6. Pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Pollution_in_the_United_States

    Air pollution is caused predominantly by burning fossil fuels, cars, and much more. [4] Natural sources of air pollution include forest fires, volcanic eruptions, wind erosion, pollen dispersal, evaporation of organic compounds, and natural radioactivity. These natural sources of pollution often soon disperse and thin settling near their locale.

  7. National Ambient Air Quality Standards - Wikipedia

    en.wikipedia.org/wiki/National_Ambient_Air...

    US counties that are designated "nonattainment" for the Clean Air Act's NAAQS, as of September 30, 2017. The U.S. National Ambient Air Quality Standards (NAAQS, pronounced / ˈ n æ k s / naks) are limits on atmospheric concentration of six pollutants that cause smog, acid rain, and other health hazards. [1]

  8. Atlanta residents told to shelter inside as chlorine fire ...

    www.aol.com/atlanta-residents-told-shelter...

    Conyers is around 25 miles east of Atlanta, a city of half a million residents. “Thursday morning, metro Atlanta residents may notice a haze and a chlorine smell due to the shifting of winds.

  9. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Air pollution hotspots are areas where air pollution emissions expose individuals to increased negative health effects. [329] They are particularly common in highly populated, urban areas, where there may be a combination of stationary sources (e.g. industrial facilities) and mobile sources (e.g. cars and trucks) of pollution.