Use this Google Map to see if pollutants at your nearest monitoring station have exceeded WHO standards – and if so, by how much. The map evaluates data from Hong Kong's 14 monitoring station by WHO standards, so that you can know the real air quality.
The World Health Organization standards for air pollutants are much stricter than Hong Kong's own air quality standards. Only an air pollution index that measures concentrations of air pollutants according to WHO standards reveals the true air quality.
You can also view this data in bar graph format or download the free iPhone application.