Air Conditioning Blows Warm Air ??

[Toe]

I have a 1996 subaru impreza. Its been great until this summer in Palm
Springs CA> It Gets Really Hot here and I dont think the sube is
handeling it too well. My air conditioner starts blowing warm air once
the temps get over 90 or sometimes when I stop at a light. Is this
common?

 

[Toe]

No..... it blows cold
it only starts blowing warm when the temperature outside gets real
hot.......guess will bring it in to check anyway......dont think its
the freon though.