How to have cold air blowing from the car's A/C in hot weather?

It sounds like the refrigerant level might be low, I would use a garden hose and pressure wash the condenser and radiator core (fins) to remove dirt, then here is a video to show you how to check and add refrigerant:

https://youtu.be/uZrQCGwXfek?si=paiqv4wKwjE8Gqz_

The service port is on the low side line here are images to help you find it. Check out the images (below). Please let us know what happens.