2008 Hyundai Sonata Air conditioner

Air Conditioning problem
2008 Hyundai Sonata 6 cyl Automatic 20,200 miles

My air conditioner used to blow very cold air within seconds, now it blows cool air after a few minutes.

Drove 50 mile during hot weather, when I parked a large stream of water was draining from under my car, after 20 mins. Or so it stopped. Then I noticed coming home the air was not cold, but cool. It got a little cooler when I reached my city which ranges cool to slightly warm. What could be causing this.

I guess I wont' get an answer for a long time. Are forum member qualified mechanics to answer my questions?