Meteorologist Paul Douglas answers reader questions about the weather and other natural phenomena every couple of weeks.

CORPUS CHRISTI, Texas — You see it all the time. The humidity is 100%! So humid! Air you can wear! While that may be true *at times*, it doesn't paint the full picture. When humidity is expressed as a ...

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 ...

(WHTM) — When temperatures rise, sometimes the air can feel dry and comfortable. But, sometimes it can feel downright tropical outside. This is caused by moisture in the air and it makes the air ...

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 ...

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 ...

Most of the time when it is raining the relative humidity is 90-99 percent, but not often is it 100 percent. Clouds form when invisible water vapor gas condenses into visible water droplets, and rain ...

The concept of zero percent relative humidity — air completely devoid of water vapor — is intriguing, but given Earth’s climate and weather conditions, it’s an impossibility. Water vapor is always ...

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 ...