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

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

The humidity has been critically low over the past few days, generally below 30%. What exactly is relative humidity, and how ...

If you think this summer has felt extra sticky and sweltering hot in Ohio and Kentucky, you're not alone. Greater Cincinnati has spent much of the summer trying to stay cool, as the area has been ...

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 ...

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 ...

Every summer, I get asked this question: "Why don't you use relative humidity? I don't care about the dew point." The thing is - you should care about the dew point more. The dew point is quite ...

Humidity can make or break a summer day. A sunny day with a temperature of 85 degrees can feel pleasant when the humidity stays low, but once the humidity cranks up, that same day can become ...

A viewer asks, if it's raining outside, but the humidity gauge only reads 74%, shouldn't it be 100%? Ray Petelin has the ...