Ground-level #ozone, a hazardous air pollutant

Ozone is the only one of the six air pollutants in #HongKong that is on the rise, reaching a record high in 2019. The lesser-known invisible killer lurking in the ambient air is responsible for respiratory #diseases and premature #deaths.

Experts warn that air pollutants like ozone could weaken our defense against the current #COVID-19 epidemic.

#HK​ #data​ #journalism​ #environment​ #EnvironmentProtection #news​ #airpollution