Re: asthma and humidity
Oh, man, it can be like breathing soup out there some days, can't it?
The best thing is, exercise someplace air conditioned, or during the coolest parts of the day. If you have to go out in the sticky evil heat, don't move too fast.
I have found that my weather-related symptoms (from cold air or hot humid air) tend to appear very quickly after I go outside, but also clear up quickly once I get into more comfortable air.
One other thing I've noticed: Showering can be an issue. Usually I love to steam up the bathroom when I shower, but in the summer, that can actually bring on more asthma symptoms.
So, I leave the fan on, the bathroom door open and the curtain as loosely closed as I can without spraying outside the tub. I also keep it short, and maybe turn the water off when washing.