It’s not the heat, it’s the humidity. Actually, it’s not the humidity, it's the dew point. If the temperature is 70 degrees and the dew point is also 70, what’s the relative humidity?

Relative humidity is the ratio of the current absolute humidity to the highest possible absolute humidity (which depends on the current air temperature), and dew point is determined by how high the relative humidity is. The closer the dew point to the air temperature, the more humid it is. Confused? Don't be. Simply put, when the dew point is high, it feels (and is) more humid.

Asked by Tom Cohen · Last updated 5 years ago · 4.4K views