Cycle/walk/work from home more often

Use public transport instead of driving for long journey

  • Roadside pollution is mainly generated from vehicles. Road transport was a major emission source of nitrogen oxides (NOx), volatile organic compounds (VOC) and carbon monoxide (CO), accounting for 18%, 21% and 50% of the total emissions in 2018, respectively.
  • Reduce the number of cars on the road can lower the possibility of traffic jam and the emissions from vehicles therefore improve roadside air quality.
  • Hong Kong’s annual average concentration of roadside nitrogen dioxide (NO2) in 2020 was 70 µg/m3, exceeding the World Health Organization (WHO) guidelines and Hong Kong’s Air Quality Objectives (AQO) limit (40 µg/m3) by 75%.

Switch to electric cars

  • Electric cars have no tailpipe emission so they can help improving roadside air quality.

Planting trees

  • Trees can shade buildings and lower the temperatures therefore the need for air conditioning and the emissions of electricity generation can be reduced
  • Electricity sector had been a major contributor to sulphur dioxide (SO2), nitrogen oxides (NOx) and respirable suspended particulates (RSP) emissions in Hong Kong. In 2018, the emissions of SO2, NOx and RSP accounted for 47%, 28% and 16% of the total emissions,respectively.

Buy local food and products instead of imported goods

  • Reduce the emissions from vehicles, ships and planes
  • Marine emissions is the major emission source in Hong Kong. In 2018, the emissions of SO2, NOx, RSP and fine suspended particulates (FSP) from marine vessels accounted for 49%, 37%, 34% and 41% of the total emissions, respectively.

Let’s take the pledge!

  • Citizen Clean Air Pledge

    For Organizations

  • Citizen Clean Air Pledge

    For Individual