Air Canada flight ac026 takes off today. There is heavy fog at Pudong airport now. Can you take off on time?

The punctuality rate of aircraft can't rely solely on weather factors. There are many factors that delay the plane, such as flow control, route weather, departure weather, arrival weather and so on. The fog situation you mentioned may be delayed, but as long as the visibility is not less than 700 meters, the normal take-off and landing can be guaranteed. Please wait patiently for the notice.