Originally Posted By: nursemike
...the wiki article suggests that high heat/high humidity environments may result in scenarios that are fatal to people resting in front of a fan in the shade. Scary stuff.

Generally, heat is the number one weather related killer. The '95 heat wave in Chicago killed about 750 residents in five days, mostly older folks just trying to ride out the heat at home. They certainly weren't exerting themselves heavily during that week.