Relating to the immediate surroundings (7)
I believe the answer is:
ambient
'relating to the immediate surroundings' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ambient that I've seen before include "Bait men to find surrounding, say, light" , "Relating to the immediate environs" , "Surrounding, temperature perhaps" , "Relating to the immediate environment" , "air" .)