The air pressure in the interior of Guangdong is rising, and a northeast monsoon is gradually affecting the area.
At the same time, a broad cloud band covers southern China.
The Observatory forecasts that it will be mostly cloudy in Hong Kong today.
There was a shower or two of rain initially and visibility was low.
There are short periods of sunshine during the day, with a maximum temperature of about 21 degrees.
Blowing a light breeze, gradually turning to a mild northeasterly wind, and the offshore wind will be clear later.
The Observatory's outlook is that it will be mostly cloudy in the next two or three days, with one or two showers of rain, and the morning will be slightly cooler.
The replenishment of the northeast monsoon will arrive in Guangdong during the weekend, and the temperature in this area will drop significantly.
The Transport Department stated that in order to tie in with the mandatory testing arrangements, the entire line at Sheung Kok Street and the public transport interchange at Kwai Chung Village have been closed.
The following bus routes have been diverted:
KMB: 33A, 34, 40X, 43, 44M
Dragon Luck: A32
Motorists please consider using other roads.