Hong Kong’s Air Pollution Index was “very high” at all three of the city’s roadside-monitoring stations, according to data from the Environmental Protection Department’s website.
The index was 184 in the Central business district and 137 in Causeway Bay as of 6 a.m. local time. The reading in Mong Kok was 196. A reading of more than 100 triggers a government warning for people with heart or respiratory illnesses to avoid prolonged stays in heavy-traffic areas.
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