is the Air Pollution Index?
Air Pollution Index (API) is a simple way of describing air
pollution levels to provide timely information about air pollution
to the public and to enhance awareness. Since June 1995, the
Environmental Protection Department (EPD) has been reporting
the API and making a forecast for the following day. In Hong
Kong the API converts air pollution data from several types
of pollutants into a value ranging from 0 to 500. Similar
systems are widely used in many other places such as the United
States, Singapore, Malaysia, Taiwan and the Philippines.
forecast serves as an alert to the public before the onset
of serious air pollution episodes. It helps the general public,
especially susceptible groups such as those with heart or
respiratory illnesses, to consider taking precautionary measures