My ac blows cold sometimes and then will blow hot air

What is your question?

Ac works for a little bit then after driving for a bit or on hotter days my ac will completely quit working and blow hot air. It typically works when it is cooler out put when it gets past 70-80 degrees out it will quit working

What makes this problem better or worse?

The ac will typically work when it is first started up or when it cools down outside

How long has your 2001 Buick Century had this problem?

A few months