Weather

aviationweather.gov, operated by the National Weather Service's Aviation Weather Center.

To assess current and forecast conditions—wind, visibility, ceilings, precipitation, and hazards—so the flight can be conducted safely and within Part 107 limits.

Meteorological Aerodrome Report (Meteorological Terminal Aviation Routine Weather Report)—a routine observation of current surface weather at an airport.

Terminal Aerodrome Forecast—a forecast of expected weather conditions within a defined radius of an airport.

A METAR reports current observed conditions; a TAF forecasts expected future conditions over a period (typically 24-30 hours) near an airport.