Expansion of Hong Kong International Airport into a Three-Runway System

Note:

1.	Air quality monitoring commenced on 28 December 2015.
2.	Following the full commissioning of the 3RS, the scope of active construction activities has been significantly reduced. Accordingly, impact monitoring at station AR2 has been discontinued from January 2026 onward.
3.	Following the commissioning of the Terminal 2 Expansion on 27 May 2026, the extent of the remaining construction activities within the site has been substantially reduced. The construction phase air quality impact monitoring was terminated after 30 June 2026.