Definition
The prevailing horizontal visibility observed at ground level at an airport, reported by an accredited weather observer or, where available, by an automated surface observing system. It is the distance at which prominent objects can be seen and identified by an observer standing on the surface.
Plain English
How far someone standing on the airport ground can clearly see in most directions. It is the visibility figure measured at the surface, not from the air.
Context Anchor
You will see this term in airport weather reports, especially when deciding whether the weather is good enough for takeoff, landing, or visual flight.
Derivation
“Surface” comes from words meaning the outer face of something. “Visibility” comes from a root meaning “to see.” Together, the term points to what can be seen from the ground-level surface, not from the air above.
Why Pilots Care
It sets legal VFR flight and airport operating minimums and directly affects whether a pilot can depart, navigate, or land under visual rules.
Grounding Statement
Surface visibility is the view from the airport surface, so fog, rain, snow, smoke, or haze close to the ground can make it much lower than the view from higher up.
Intuition Check
Do not assume surface visibility means what you can see from the airplane in flight. Here, it means visibility measured or observed at the ground-level reporting point.
Example Sentence 1
The METAR reported surface visibility of three miles in light rain, which was just enough for the approach minimums.
Example Sentence 2
Fog reduced surface visibility to one-quarter mile, so the pilot delayed takeoff until conditions improved.