Weather Talk: Something to be said in idiom regarding humidity
You may have heard the phrase, “It’s not the heat that will get you, but rather the humidity.” That phrase is partially true.
When the body becomes overheated, it sweats to cool itself down. If the surrounding air is more saturated, the rate of evaporation becomes slower and so sweating is not as effective. We get hot faster and stay hot longer.
When the humidity is lower, the heat index is also lower and we are able to tolerate higher temperatures much easier.
In reality, the heat index number is inadequate because it does not account for sunshine or wind, which also affects human comfort.
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