Air pollution blankets Hong Kong, with nitrogen dioxide and ozone mass causing serious health risk

A blanket of haze hung over Hong Kong for most of Saturday, with 14 of 16 air quality monitoring stations reaching the highest level of 10+ on the pollution index at 5pm, indicating a “serious” health risk. The stations in Tai Po and Tung Chung recorded a 10, meaning a “very high” health risk. The situation improved slightly in the evening, with 12 stations having an index of 8 to 9, also a “very high” health risk and the remaining stations showing readings...