Air Pollution in Hong Kong
Air pollution can be divided into two groups, outdoor and indoor:
How common pollutants affect our bodies?
Calculation of Air pollution index
Air pollution index (API) was introduced by Environmental Protection Department in January 1998. It is a simple and unified index to measure air pollution levels. It serves as a basis for issuing advice to the public before the onset of air pollution episodes. It will help the public, particularly susceptible groups such as people with heart or respiratory illnesses, to consider taking precautionary measures when necessary.
A majority of areas in Hong Kong are suffering from high API. For example: API in 14 January 2003
API reaches a high level of 166 on 28 March of 2000 mainly related to poor air circulation leading to motor vehicle emissions stagnation
When compared with other cities:
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