Here’s an even more deceiving weather situation. One day is 80 degrees and 50 percent relative humidity. Another day is 90 ...

Popular usage of “humidity” refers to a measure of the atmosphere’s water content or the amount of moisture in the air. What many may not realize is that there are a number of different humidity ...

YOUNGSTOWN, Ohio (WKBN) – There might not be a more misunderstood phrase in meteorology than “relative humidity.” Every summer when humidity returns, this phrase echoes across the United States: “It ...

Dew point is the temperature at which the air becomes “saturated” – in other words, it is holding all the water vapor it possibly can. If the temperature and the dew point equal each other, the water ...

Dew point and relative humidity, two terms that have floated around many weather forecasts over the years. What exactly do they mean and when are they best used to describe the conditions outside? Let ...

Dew point/relative humidity questions come up fairly often and this is a good one. Water vapor in the atmosphere is pretty important for deep-sky observing and photography. The atmosphere can only ...

There are various ways to measure the amount of water vapor in the atmosphere. The amount of moisture a given parcel of air can hold is dependent on the ambient temperature. Higher temperatures mean ...

ROCHESTER, N.Y. – This time of the year it is especially important that we effectively communicate the amount of moisture in the atmosphere on any given day. There are different ways of doing this, ...

I love getting your questions, and I got a great one from Steve! He asks: It's pouring rain, but the outdoor humidity gauge says 74% relative humidity. How's that possible? Shouldn't it be 100%? This ...

Meteorologist Ray Petelin joined the KDKA Weather Team in October 2018, but is no stranger to the weather in Pittsburgh and Western Pennsylvania. He has been forecasting in Pittsburgh since 2011 and ...