The phenomenon, which could be observed from nearly every tall building in the areas, was a combination of fog and dry haze, according to Le Thi Xuan Lan, a hydrometeorologist from the Southern Regional Hydro-Meteorological Center.
The foggy weather was brought about by the additional cold front that has been affecting the northern region of Vietnam, Lan said.
The fog was intensified by the dry haze, created by the excessive amount of exhaust and dust emitted by vehicles and industrial activities.
The dry haze reduced horizontal visibility and gave the atmosphere a characteristic hazy appearance, while taking a long time to dissipate, the expert added.
The weather condition is not a result of Typhoon Melor, which has been forecast to reach the East Vietnam Sea soon, as the storm’s range of effect is still far from the city, Lan explained.
Ho Chi Minh City and other provinces in southern Vietnam experienced a similar hazy atmosphere in early October.
The southern hub and many localities in the Mekong Delta region, including Soc Trang, Ca Mau, Kien Giang, Dong Thap, Ben Tre and Can Tho, were blanketed with fog which formed on October 5 and lasted for several days.
The situation was partly created by the haze crisis caused by severe forest fires in Indonesia then, according to experts.
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