While initiatives to control other major pollutants have yielded results, local ozone pollution has surged 20 per cent since 2013, hitting a two-decade high. Illustration by Perry Tse
While initiatives to control other major pollutants have yielded results, local ozone pollution has surged 20 per cent since 2013, hitting a two-decade high. Illustration by Perry Tse
Focus

Ground-level ozone: the invisible, deadly pollutant undermining Hong Kong’s quest for clean air

The city’s air quality is getting better, but a hidden, lesser-known concoction is lurking that has scientists and policymakers scratching their heads

While initiatives to control other major pollutants have yielded results, local ozone pollution has surged 20 per cent since 2013, hitting a two-decade high. Illustration by Perry Tse
While initiatives to control other major pollutants have yielded results, local ozone pollution has surged 20 per cent since 2013, hitting a two-decade high. Illustration by Perry Tse
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