Relative humidity is a simple concept as weather phenomena go – but it has significant, far-reaching consequences for how we must take care of ourselves on a hot or wet day. Humidity is the amount of ...

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

Industry leaders realized hundreds of years ago that their processes and machines operate best when the indoor relative humidity is maintained at an optimum level for their process. They found it was ...