The heat index, or apparent temperature, combines air temperature and humidity to indicate how hot it feels to the body. High humidity slows sweating, the body's natural cooling system, making ...

We’ve all heard someone say, ‘It’s not the heat, it’s the humidity.’ Many of us have also seen the heat index on a hot and humid summer day, but what about a wet bulb temperature? Several scales ...

If you looked at the heat index during this summer’s sticky heat waves and thought, “It sure feels hotter!,” you may be right. An analysis by climate scientists at the University of California, ...

As August kicks off, South Carolina residents are again under a heat advisory with temperatures that could feel like 108 degrees. Like much of the Southeast, Upstate residents will see the heat index ...

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 ...

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 ...

Imagine you’re sitting among friends on the porch with a big pitcher of ice cold lemonade. The heat is searing and the air is still and stifling. It’s almost hard to breathe. You look to your friends ...

We know proper indoor ventilation is key to reducing the spread of Covid-19. Now, a study by MIT researchers finds that indoor relative humidity may also influence transmission of the virus. Relative ...