OCR Text |
Show Know The Weather Why does high humidity in summer make us uncomfortable? uncomfort-able? THE RELATIVE humidity (percentage of moisture in the air) has a noticeable effect on us because the body perspires constantly, the amount depending de-pending on activity and other factors. On days when a high pressure press-ure system is above us, with its usually dry, cool air, we feel good. The drier air causes rapid evaporation of perspiration, perspira-tion, and clothes do not become be-come wet or sticky. IN ADDITION, low pressure press-ure (which often accompanies high humidity) acts on our blood vessels with what is sometimes a depressing effect. Thus physically and physiologically physiolo-gically high humidity directly affects our comfort. |