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Hong Kong air pollution
Hong KongHealth & Environment

Hong Kong air pollution still far exceeds WHO levels and worsening, concern group finds

Traffic congestion, spurred by growing number of private cars, is blamed for poor air quality

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Pedestrians covering their noses in Causeway Bay. Photo: Felix Wong
Ernest Kao
Concentrations of nitrogen oxides in the air in Hong Kong have consistently surpassed maximum safe levels set by the World Health Organisation in the last five years, with average roadside emissions in Central, Causeway Bay and Mong Kok nearly 2.5 times higher, according to a mid-year review by a concern group.
The Clean Air Network believes the source of such persistent roadside NOx pollution is traffic congestion spurred by uncontrolled growth in the number of private cars – at least 4.6 per cent per year – in the last decade.

For air measured at ambient monitoring stations, NOx levels were highest in Sham Shui Po, Kwai Chung and Tsuen Wan, all of which recorded annual average concentrations of more than 60 micrograms per cubic metre, far in excess of the WHO’s recommended level of 40.

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Patrick Fung Kin-wai, the group’s chief executive, said chronically high levels of pollution were posing a significant threat to public health. He urged the government to address the threat when it formulated its planning and transportation policies.

“Roadside air quality has never been at a healthy level,” Fung said. “The public health impacts such as doctors visits and premature deaths need to be looked at.”

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The group cited data from the Hedley Environmental Index, which estimates there were 821 pollution-related premature deaths in the first half of the year.
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