Well, I seem to be the "odd man out" in this conversation, because I have more trouble breathing, etc., in really high humidity. Here in Ponte Vedra, FL, we've had many days lately with up to 90% humidity, and it almost feels like I'm trying to breathe in a bowl of soup! With both cystic fibrosis and bronchiectasis, I've had to be extra careful when venturing outside -- attentive to both air quality and humidity.