What is a "METAR"?

A "METAR" is a routine aviation weather report that provides essential information about current weather conditions at an airport or aerodrome. This report is generated at regular intervals, typically every hour, and includes key elements such as temperature, dew point, wind speed and direction, visibility, weather phenomena (like rain or snow), and cloud cover.

Understanding METARs is critical for pilots as they assess weather conditions that could impact flight safety and operations. By interpreting a METAR, pilots can make informed decisions regarding takeoffs, landings, and in-flight adjustments. This systematic reporting is standardized and easily accessible, making it a vital tool for flight planning and situational awareness.

The other choices do not accurately describe a METAR. For instance, in-flight emergency procedures are critical guidelines for managing emergencies during a flight and do not relate to routine weather reporting. Navigation charts are used for plotting and planning flight routes but are distinct from weather reports. Certification levels for pilots pertain to their qualifications and training but are unrelated to the specific context of weather observations.