Hong Kong Observatory Logo

Forecast Air Trajectory

Please select period:

Forecast trajectory of air which reach
Hong Kong at 20:00HKT 21 July 2019 (Sunday)

Date and time Position of air mass
20:00HKT 21 July 2019 22.3 N 114.2 E
20:00HKT 20 July 2019 15.0 N 112.5 E
20:00HKT 19 July 2019 8.6 N 108.1 E
20:00HKT 18 July 2019 2.7 N 106.2 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