"When the humidity is high, the evaporation process is suppressed, increasing your risk of overheating."
This, I did not know. I live in KC, so it gets crazy humid here and when I go on a run, I do feel excessively hot on those days when the humidity is at its highest, even lightheaded sometimes. I guess I need to listen to my body more.
If you're curious as to why that is, the Wikipedia articles on evaporation and vapor pressure are a good start. Basically, liquid water and water vapor will reach an equilibrium once water vapor makes up a certain proportion of the surrounding air. High humidity indicates that the air's water vapor content is at or near that equilibrium point for the current temperature.
"When the humidity is high, the evaporation process is suppressed, increasing your risk of overheating."
This, I did not know. I live in KC, so it gets crazy humid here and when I go on a run, I do feel excessively hot on those days when the humidity is at its highest, even lightheaded sometimes. I guess I need to listen to my body more.
If you're curious as to why that is, the Wikipedia articles on evaporation and vapor pressure are a good start. Basically, liquid water and water vapor will reach an equilibrium once water vapor makes up a certain proportion of the surrounding air. High humidity indicates that the air's water vapor content is at or near that equilibrium point for the current temperature.