Definition
The rate at which air is moving horizontally past a fixed point, typically measured in knots in aviation. Windspeed is reported as the magnitude of the wind, separate from its direction.
Plain English
How fast the wind is blowing. In aviation it is almost always given in knots.
Context Anchor
Seen in weather reports, forecasts, and instrument procedure planning, especially when judging wind effects during departure, en route flight, approach, and landing.
Why Pilots Care
Directly affects takeoff and landing distances, crosswind limits, and fuel planning.
Grounding Statement
A stronger wind can push the aircraft more noticeably, especially when it is not blowing straight down the runway or along the planned course.
Intuition Check
Windspeed is not the aircraft’s speed. It is the speed of the moving air itself, normally measured relative to the ground.
Example Sentence 1
The ATIS reported wind 270 at 15, so the windspeed was 15 knots from the west.
Example Sentence 2
Higher windspeed reduced the required takeoff distance but stayed within the aircraft's demonstrated crosswind limit.