Automated Surface Observation System

Automated Surface Observation System (ASOS)
The Automated Surface Observation System, or ASOS, is one of the many sources of weather information that pilots use before and during their flight.

ASOS (Automated Surface Observation System) The primary surface weather observing system in the U.S., supporting aviation operations and weather forecasting.

ASOS (Automated Surface Observation System) — The primary automated surface weather observing system in the U.S., supporting aviation operations and weather forecasting.

See also: ILS, Flight service station, ATIS, ASOS, Air traffic