Radiation fog is the most common type in the central region. It mostly appears at dawn and dissipates at around 7-8 am after sunrise.
According to the Vietnam Air Traffic Management Corporation, fog reduces visibility, requiring flight rescheduling and causing some aircraft to hold or divert to alternate airports.
The dense fog at Phu Bai Airport in Thua Thien-Hue Province (Photo by VATM)
Fog also affects the movement of aircraft and ground vehicles on the airport apron, increasing the risk of collisions.
In January 2025, fog appeared at several airports in central Vietnam, including Phu Bai, Phu Cat, and Pleiku, causing some flights to hold before takeoff or landing.
Statistics from the Danang Aviation Meteorological Centre show that Phu Bai Airport records the highest average number of foggy days per month, peaking at 6 to 7 days in February and March.
The Danang Aviation Meteorological Centre always tries to provide early and long-range fog forecasts to support air traffic management.
On January 24, dense fog disrupted northern and central Vietnam airports, forcing up to seven flight diversions and affecting dozens more, including five Vietnam Airlines flights and two VietJet Air flights.
