On the other hand, low humidity can dry skin and allow airborne illnesses to spread more quickly. Most people are the most comfortable at around 30-60% humidity. ... Least Humid States 2022. StateAverage Relative HumidityAverage Dew Point New Mexico45.90%30.8 Utah51.70%28.6 Colorado54.10%28.8 Wyoming57.10%26.9 46 more rows