What is the difference between a METAR and a TAF?

A METAR and a TAF serve different purposes in aviation weather reporting. A METAR is a routine aviation weather report that provides current conditions at an airport, including information on temperature, wind direction and speed, visibility, cloud cover, and significant weather phenomena. This information is essential for pilots and air traffic controllers to assess immediate weather conditions affecting flight safety.

In contrast, a TAF, or Terminal Aerodrome Forecast, is a weather forecast specifically for the area around an airport. It provides predictions about expected weather conditions, typically covering a 24 or 30-hour period, including information on expected visibility, wind direction and speed, significant weather changes, and anticipated cloud cover changes. This forecast helps pilots plan their flights by understanding what weather conditions to anticipate during their approach and landing at an airport.

The distinction between the two is critical for aviation operations: METARs are used for current conditions, while TAFs are essential for future weather expectations, assisting pilots in making informed decisions about their flights.