How often are METAR reports typically generated?

METAR reports are typically generated on an hourly basis. This standardized routine ensures that pilots, air traffic controllers, and meteorologists have access to the most current weather information at regular intervals. The hourly updates allow for timely awareness of weather changes that could affect flight operations, safety, and planning.

While some METARs can be issued more frequently in specific circumstances—like during rapidly changing weather conditions— the normal cycle is established at every hour. This frequency forms part of the aviation community's reliance on METAR reports for real-time observational weather data, which is critical for maintaining safe flight operations.

In contrast, daily, every 30 minutes, or weekly reports do not align with the real-time needs of aviation, limiting the usefulness of weather information for pilots and operational decisions.