What are the weather criteria for grounding aircraft?

There are two types of weather standards for aircraft grounding:

1. Terminal weather standards: based on fog, thunderstorms, cloud height, visibility, wind direction, and wind speed that affect the safety of aircraft takeoff and landing When the actual weather conditions are worse than this standard, aircraft cannot take off or land.

2. Route weather standards: Standards set according to hazardous weather conditions such as thunderstorms, severe icing, and turbulence that affect flight safety. When the actual weather conditions on the route are worse than this standard, the aircraft should change its route or stop taking off. Due to the different terrain, equipment and other conditions of each airport and the differences in aircraft types, the standards adopted are also different.