If the outside temp is around 30 degrees Celsius, what should the airco temp coming out of the vent outlets in the car be?

 

my guess is something in the 5-10C (40-45F) range on a hot day, 3-5C (35-40F) on a cool/moderate day. You can use the REC switch to recirculate the cooler inside air to help chill the car after its been sitting in the sun as well. I suspect newer climate controls do this automatically (or if the car has a "max" setting).