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 ...

As the heat and humidity increase this week, we will hear a lot about the heat index, especially as temperatures come close or surpass the 100-degree mark. The heat index itself is relatively new, ...

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 ...

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 ...