It dosen't seem to bother me at night. It's never woken me up. When I suffered from asthma as a kid that would wake me up at night and I would have to take my inhaler. This is different, no real wheezing or cough, just can't get a full deep breath. It usually gets worse through out the day and then sometimes gets better towards evening. But it's definitely an air hunger feeling with some tightness in the chest.