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  2. 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.

  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. Air pollution in Hong Kong - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_in_Hong_Kong

    Ship with tourists, Victoria Harbour, Hong Kong, 2024. Pollutants from marine vessels are main sources of air pollution in Hong Kong. [55] As per the Clean Air Network, 53% of Hong Kong's pollution comes from local sources – power stations, idling engines of cars, trucks and buses and marine emissions as of 2012.

  5. 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 ...

  6. Environmental issues in Nepal - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues_in_Nepal

    In Kathmandu, ambient air pollution due to construction projects, the high population which results in an increased number of vehicles, and bad conditions of the road lead to hazardous pollution. [3] In Nepal, Diarrhea is the 4th leading cause of death. There is still limited systemic monitoring of the water system and water quality. [4]

  7. Kathmandu - Wikipedia

    en.wikipedia.org/wiki/Kathmandu

    Air pollution is a major issue in the Kathmandu Valley. [46] [47] [48] According to the 2016 World Health Organization's Ambient Air Pollution Database, [49] the annual average PM2.5 (particulate matter) concentration in 2013 was 49 μg/m 3, which is 4.9 times higher than recommended by the World Health Organization. [50] [51]

  8. Air Pollution Index - Wikipedia

    en.wikipedia.org/wiki/Air_Pollution_Index

    In Hong Kong, there were two types of API: General API and Roadside API. The EPD reported the latest APIs hourly. The index and the air quality objectives were set in 1987; and pollutant levels are measured over varying periods, in μg/m 3. There are hourly, 24-hour and annual targets for sulfur dioxide and nitrogen dioxide, and 24-hour and ...

  9. Environmental Protection Department - Wikipedia

    en.wikipedia.org/wiki/Environmental_Protection...

    Environmental Protection Department (EPD) is a department of Hong Kong Government concerning the issues of environmental protection in Hong Kong.The EPD is responsible for developing policies covering environmental protection, nature conservation; enforcing environmental legislation; monitoring environmental quality; providing collection ...