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  2. The states with the dirtiest air will surprise you - AOL

    www.aol.com/news/states-dirtiest-air-surprise...

    The Golden State has the worst air quality of any state in the US, according to a new report from the United Health Foundation. The report measured air quality by the average person's exposure ...

  3. Fresno is among top 10 most polluted cities in U.S., American ...

    www.aol.com/fresno-among-top-10-most-120000248.html

    Fresno has some of the worst air quality in the United States, according to the American Lung Association. The Central Valley is one of the top 10 most polluted cities in the United States ...

  4. The Dirtiest (and Cleanest) Big Cities in America - AOL

    www.aol.com/dirtiest-cleanest-big-cities-america...

    Air pollution has been a consistent and ongoing nuisance in Phoenix — along with five other cities in Arizona, it’s tied for the worst air quality in the nation. According to research group ...

  5. 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 ...

  6. Air pollution in the United States - Wikipedia

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

    Since 1999, the EPA has used the air quality index (AQI) to communicate air pollution risk to the public, on a scale from 0 to 500, with six levels from Good to Hazardous. [10] (The previous version was the Pollutant Standards Index (PSI), which did not incorporate PM2.5 and ozone standards.)

  7. List of countries by air pollution - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_air...

    Air pollution is among the biggest health problems of modern industrial society and is responsible for more than 10 percent of all deaths worldwide (nearly 4.5 million premature deaths in 2019), according to The Lancet. Air pollution can affect nearly every organ and system of the body, negatively affecting nature and humans alike.

  8. WA air quality ranked among best in the U.S. Which counties ...

    www.aol.com/wa-air-quality-ranked-among...

    The five states with the worst air quality, according to the study, are: Oklahoma - 45.9. Illinois - 46. Delaware - 47. Utah - 47.6. Missouri - 48.1. WA counties ranked by air quality.

  9. Milwaukee has some of the worst air quality in the nation, a ...

    www.aol.com/milwaukee-worst-air-quality-nation...

    Rankings were based on the area's worst county's average number of unhealthy air quality days. In the Milwaukee metro area, Racine County had an average of 6.7 unhealthy air quality days per year ...