(WXYZ) - Don't know the difference between dew point and relative humidity? Dew point is a much better way to track how humid the air is than relative humidity readings. Relative humidity readings can go from very high (near 100% sometimes) in the mornings to less than 50% in the afternoon simply because the air gets warmer. But dew point is a more constant measure of the moisture content of the air which doesn't vary as the air warms and cools.
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