Summer is here, and heat and humidity have arrived.

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 ...

Relative humidity is expressed as a percentage, whereas the dew point is expressed in degrees.

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 ...

DEHUM: The basic operating principle of a dehumidifier is to remove water vapor from the air without overcooling the space. April 20, 2026 Humidity, aside from temperature, is perhaps the most ...

Humidity - arguably the most important factor in deciphering how pleasant a day will be. We all know 90 degrees with high humidity and 90 degrees with no humidity is a different ball game. The ...

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 ...

Relative humidity is not a good way to tell if we have muggy air on the way. Here’s why. The key word in relative humidity is relative. The humidity percentage is given, relative to how much moisture ...

New research finds indoor relative humidity between 40 and 60 percent is associated with relatively lower rates of COVID-19 infections and deaths, while indoor conditions outside this range are ...

Most people assume that temperature and relative humidity always move in opposite directions throughout the day: when the air warms up, it becomes drier, and vice versa. This common pattern makes the ...