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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 ...
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.
In October 2005, Task Force on Air Pollution criticised the Government for deluding itself with a pollution index that is a "meaningless" indicator of health risks. [4] Professor Wong Tze-wai, at the Chinese University of Hong Kong commented that the current air pollution index "gives a false sense of security". [4]
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 .
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 ...
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 ...
Reporting standards vary enormously in different countries. No statistics are particularly accurate, but case and death rates in India (South Asia) and Sub-Saharan Africa in particular are probably much higher than reported. [27] [28] COVID-19 cases and deaths by region, in absolute figures and rates per million inhabitants as of 25 December ...
[32] [33] [34] A reduction in air pollution mitigated both climate change and COVID-19 risks, but it has not yet been established which types of air pollution, if any, are common risks to both. [35] The Centre for Research on Energy and Clean Air reported that methods to contain the spread of SARS-CoV-2 , such as quarantines and travel bans ...