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Air pollution can affect nearly every organ and system of the body, negatively affecting nature and humans alike. Air pollution is a particularly big problem in emerging and developing countries, where global environmental standards often cannot be met. The data in this list refers only to outdoor air quality and not indoor air quality, which ...
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]
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 ...
Ship with tourists, Victoria Harbour, Hong Kong, 2024. Pollutants from marine vessels are main sources of air pollution in Hong Kong. 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.
For instance, some places like Africa and South America lack air pollution reporting tools, so their pollution levels are probably not reflected in this list. Moreover, many cities from a certain country are featured in the list may only mean that they have large and wide air pollution monitoring networks, which may or may not be an indicator ...
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 ...
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 .
The total land area of Hong Kong is 1,076 square kilometres, but about 75% of this land is open countryside, [1] which contains more than 2600 species of vascular plants, about 450 species of birds, about 200 species of butterflies, about 100 species of dragonflies, 40 species of mammals, 80 species of reptiles and more than 20 species of amphibians, including some that are endemic to the ...