Vietnamplus

Noi Bai International Airport in Hanoi has been able to receive flights since early February 18 as the weather has improved, according to the Civil Aviation Authority of Vietnam.

Thick fog in the northern region forced the diversion of about 30 domestic and international flights on February 17 evening.

A strong cold spell hit the north and north central provinces from the evening of January 7-11, affecting local lives and production.

Meteorologists are debating the cause of the thick fog that has blanketed HCM City and some southern provinces in recent days, which has triggered concerns of residents about worsening air quality.