Ambient temperature

The temperature of the air surrounding a person or an object.

Aviation Maintenance Technician Handbook — Airframe, p. G-2

Also defined in 1 more source

The temperature in the area immediately surrounding the aircraft.

Pilot's Handbook of Aeronautical Knowledge, p. G-3

Taught in PP-F Concepts, PP-F Procedures, AF-C Procedures, AF-G Procedures, AF-K Concepts, AF-K Procedures and 2 more.