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Prof Anthony Hedley of the University of Hong Kong said in September 2007 that if Hong Kong's Air Pollution Index was based on WHO recommended levels, our readings would be "absolutely sky high" for most of the year. [76] Secretary for Environment, Transport and Works Sarah Liao Sau-tung said the WHO targets were too stringent. [19]
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.
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 ...
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 ...
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 ...
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 ...
[1] [2] By default the least polluted cities which have fewest particulates in the air come first. Click on the arrows next to the table's headers to have the most polluted cities ranked first. Click on the arrows next to the table's headers to have the most polluted cities ranked first.
From the website's launch in 1999 to 2003, the average number of monthly page views for its maps increased from 0.1 to 4 million. [11] In November 2003, Centamap was the first mapping service licensed by the Hong Kong Census and Statistics Department to disseminate census data at the building group level in addition to other GIS functions. [12]