Hong Kong Observatory Logo

Forecast Air Trajectory

Please select period:

Forecast trajectory of air which reach
Hong Kong at 20:00HKT 20 December 2017 (Wednesday)

Date and time Position of air mass
20:00HKT 20 December 2017 22.3 N 114.2 E
20:00HKT 19 December 2017 27.7 N 115.8 E
20:00HKT 18 December 2017 33.0 N 117.5 E
20:00HKT 17 December 2017 37.6 N 114.0 E


This webpage shows the 72-hour trajectory of the forecast movement of the air reaching Hong Kong at a height of 100 metres above ground level ending at 8 a.m. or 8 p.m. of the next 2 to 3 days.

The product may be useful for tracing the origin of air reaching Hong Kong.


Points to note:

|  Back  |  Copyright and Disclaimer  |  Chinese Version  |


Last updated on 30 November 2012