High humidity does not necessarily negatively impact dry eyes; it may often have the opposite effect. According to a study published by the National Center for Biotechnology Information (NCBI), higher humidity levels serve as protective factors for the ocular surface.  The University of Rochester Medical Center also suggests that about 45% or more humidity levels are best for your eyes. However, an interaction between high humidity and particulate matter in the air could worsen dry eye symptoms. Moreover, low humidity and dry air can impact the eye's tear film by increasing evaporation and reducing tear-film breakup time, leading to dry eyes.