How do I troubleshoot my Audi A2's AC not blowing cold air?

I noticed that my Audi A2's air conditioning is not blowing cold air. What could be the possible causes of this issue and how can I fix it?

One possible cause could be a low refrigerant level in your AC system. You can check the refrigerant level and recharge it if needed. Another possible cause could be a faulty AC compressor or a clogged air filter. It's best to have a professional mechanic check and diagnose the issue.