I assume the fans are working and the AC is properly charged. Go get a can of HVAC coil cleaner. I bought a can for less than $10 at Home Depot. Give the condenser coils a good cleaning. I cleaned my wife's condenser this past Saturday and again yesterday. It made a big difference. You should also check and/or replace the cabin air filters. It doesn't take long for them to get pretty nasty and reduce air flow.