i thought some of you might be interested that on the weather.com site they have something called the aches and pain index. at the top of the home page you will see a link entitled "healthy living." if you scroll over it there will be a menu visible. click on "aches & pains." once there you type in your city or zip code and it will give you info on how the weather may affect your health. it considers factors such as humidity, barometric pressure, etc. besides forecasting these factors for your city, there is also a lot of information on how and why and who weather affects. using the same menu you can also find out air quality and pollen information. hope some of you find it helpful.