The Chinese capital’s weather bureau warned of visibility of less than 50m in some places, causing many airports to cancel flights.
Smog-hit Beijing has issued its highest red fog alert for a second day on Wednesday after weeks of choking winter pollution.
The Chinese capital’s weather bureau warned of visibility of less than 50m in some places, causing many airports to cancel flights.
Some 2,000 tourists were stranded on a cruise ship for two extra days near the port of Tianjin, as smog prevented the ship from docking till Monday.
Poor visibility also caused three major ports to suspend loading of ships on Tuesday.
Pollution alerts are common in northern China, especially during frigid winters when energy demand soars, reported Straits Times.
China is now in its third year of fighting pollution aimed at reversing damage done to its skies, but effects have been minimal.