I was diagnosed with COPD about a year ago. My O2 Levels are usually around 96 when resting and 83 when being physically active without oxygen. Lately they are not ever above 93. Our air quality is horrible due to fires in the north west. Today I am very concerned. My levels are staying below 93 even with my oxygen. My chest is hurting more than usual and mucus production has gone way up. I have had a horrible headache since yesterday. My pulse is always around 100. It has been pretty steady at about 103. I have had felt dizzy and seeing stars several times today. Are these warning signs or par for the course.