[Crawli City Gym Weaknesses]

Thanks so much for the help and tips. Also, I can sorta get some of them, but is there a list somewhere of what types change into what, as well as what types of moves are buffed up by what kinds of environments? 

[Crawli City Gym Weaknesses]

Hi guys. Can someone please enlighten me on whether the Bug-type pokemon are supposed to be weak to Air in Crawli's gym? Cos I won't lie; it's rather frustrating having to fight an even battle at level 45 when both fire (nullified by rain) and air (???) are ineffective against the bug-type pokemon of Crawli