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

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

    This list contains the top 500 cities by PM2.5 annual mean concentration measurement as documented by the World Health Organization covering the period from 2010 to 2022. 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.

  3. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    The most commonly used air quality index in the UK is the Daily Air Quality Index recommended by the Committee on the Medical Effects of Air Pollutants (COMEAP). [39] This index has ten points, which are further grouped into four bands: low, moderate, high and very high. Each of the bands comes with advice for at-risk groups and the general ...

  4. List of countries by air pollution - Wikipedia

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

    The following list of countries by air pollution sorts the countries of the world according to their average measured concentration of particulate matter in micrograms per cubic meter (μg/m 3). The World Health Organization's recommended limit is 5 micrograms per cubic meter, although there are also various national guideline values, which are ...

  5. Detroit and DC suffer worst air quality in world while at ...

    www.aol.com/air-quality-latest-biden-urged...

    People living in the Midwest and Northeast were warned of a worsening air quality index throughout the week due to smoke from the Canadian wildfires

  6. Doomsday clock 2024 - live: Scientists to reveal how close we ...

    www.aol.com/doomsday-clock-2024-live-scientists...

    Doomsday Clock has its own playlist. 12:58, Andrew Griffin. The Bulletin, which runs the clock, has made a playlist of songs that mention it or take inspiration from it.There’s 13 songs ...

  7. Delhi becomes world’s most polluted city as AQI levels reach ...

    www.aol.com/delhi-becomes-world-most-polluted...

    The AQI readings below 100 are considered to be satisfactory for breathing, under 200 are marked “poor”, while the 400-500 range mark pollution levels as "severe" in an area. AQI 1696.

  8. Air pollution in Lahore - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_in_Lahore

    5 special squads have been formed to fight smog, Metropolitan Corporation Lahore, Water and Sanitation Agency (Wasa), police, district administration and Lahore Electric Supply Company (Lesco) [11] [12] Lahore jumped more than 10 places to become the city with the worst air in the world in 2021, according to an annual global survey by a Swiss ...

  9. List of least-polluted cities by particulate matter concentration

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

    Below is a list of 526 cities sorted by their annual mean concentration of PM2.5 (μg/m 3) in 2022. [1] [2] By default the least polluted cities which have fewest particulates in the air come first.