Definition
Weather data, forecasts, advisories, and reports produced and distributed for the specific purpose of supporting flight planning and in-flight decision-making. It includes observations (such as METARs and PIREPs), forecasts (such as TAFs and area forecasts), and hazard advisories (such as AIRMETs, SIGMETs, and Convective SIGMETs), delivered through approved aviation sources.
Plain English
Weather information made for pilots. It covers what the weather is doing now, what it is expected to do, and what hazards to watch for, all packaged in formats that aviation uses.
Context Anchor
Seen when checking official aviation weather sources before a flight, while planning an instrument flight, or when updating weather information during flight.
Derivation
Aeronautical comes from the Greek 'aer' (air) and 'nautes' (sailor), literally 'air sailing.' So 'aeronautical weather information' simply means weather information intended for those navigating the air, as distinct from general public weather.
Why Pilots Care
Pilots use it to evaluate conditions, meet regulatory requirements, and decide whether a flight can be conducted safely.
Intuition Check
Do not read this as any weather information that mentions the sky. In this FAA context, it means weather information intended for aviation decisions.
Example Sentence 1
Before departure, the pilot reviewed aeronautical weather information including the current METAR, the destination TAF, and any active SIGMETs along the route.
Example Sentence 2
Updated aeronautical weather information showed improving conditions that allowed the return trip to proceed as planned.