Source: Hong Kong Government special administrative region
Health risk category for Air Quality Health Index reached “Serious” level
Winds are weak over Hong Kong this afternoon, which are unfavourable for pollutant dispersion. The intense sunshine enhances photochemical smog activity, leading to the rapid formation of ozone and fine particulates in the Pearl River Delta region. The high ozone level also promotes the formation of nitrogen dioxide.
According to the Hong Kong Observatory’s forecast, under the influence of a strong easterly airstream, it will be mainly cloudy and windy over the coast of Guangdong later this week. It is expected that air quality will improve by then.Issued at HKT 18:01
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