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Forecast Air Trajectory

Forecast trajectory of air which reach
Hong Kong at

Data not available

Backward Trajectory Map

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:

  • Normally, this web page will be updated daily at around 2 a.m. and 2 p.m.
  • The trajectory was prepared using the HYSPLIT model of NOAA and output from numerical weather prediction models.

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