Why is it that when it's raining, the relative humidity isn't 100%?

Meteorologists are clarifying the difference between dew point and relative humidity as parts of the Southeast brace for a warm, sticky weekend with scattered showers. Dew point measures the actual ...

Relative humidity measures how much moisture is in the air compared to how much it could hold at a given temperature. It is simply the dew point temperature divided by the air temperature, times 100.

NORFOLK, Va. — Most summer days, you hear us talk about “humidity” when describing how the air feels. While many people are familiar with the term relative humidity — the percentage of water vapor in ...

A higher dew point directly means that there is more water vapor in the air. So when you’re describing the air as being ...

Moisture problems show up everywhere in HVAC systems. Knowing how humidity behaves in air can make troubleshooting ...