The first major heat wave of summer has enveloped much of the midwestern and eastern U.S. in a brutal “dome” of record temperatures and high humidity. The dome phenomenon happens when weather ...

Our meteorologist answers your deepest weather questions.

Humidity, a measure of the amount of water vapour in the air, plays a crucial role in shaping our weather, influencing rainfall, and affecting how we feel day to day. While often overshadowed by ...

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

Before you step outside, you may want to know how humid, or "sticky" it feels. That comes down to knowing the dew point. Dew point is more commonly discussed in the summertime and is a good measure of ...

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

I know in Houston, we hear the term humidity which is used to correlate to how muggy it may feel outside. But what actually is humidity and what does it represent? Humidity is the measurement of water ...

It's summertime, and the living is muggy. As temperatures continue to escalate around the globe, there is an increased risk of health problems due to extreme temperatures. When it's between 105 and ...

A heat wave is moving across the U.S., resulting in both high temperatures and dangerously high humidity. NPR's Ayesha Rascoe speaks with meteorologist Ben Noll of the Washington Post. For much of the ...

Extreme levels of heat and humidity are forecast to spread across the country over the next two weeks, blanketing the Southwest, Midwest, and East Coast with high temperatures beginning this June 19 ...

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