Why is my allroad air compressor running more than it usually does while I'm driving?

What is your question?

A few days ago I noticed my '01 Audi allroad's air suspension compressor goes on at 30 mph and usually doesn't shut off until I slow down to 10 mph. I just bought the car about 2 weeks ago and I've never noticed the compressor going this long. What could cause this issue? I seem to have no problems with the air suspension itself, when I come out to my car in the morning the suspension has not deflated, so I'm assuming the air compressor issue has little or nothing to do with the air struts themselves.