Across much of the world, hotter days are no longer arriving alone. The air itself is changing, sometimes turning from dry ...

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 ...

It’s a T-shirt kind of day in Washington, DC: 85 degrees with 63 percent humidity. We all know those numbers mean hot, but what exactly does that humidity percentage tell us? And why should we care?

Recent reports from the Hong Kong Observatory indicate that relative humidity levels plummeted to 18% by 2 PM, marking the lowest recorded level for January since the establishment of the automatic ...

(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 ...

Water vapour is fundamental to life on Earth. As well as being a greenhouse gas, water vapour is the basis for clouds and rain. Therefore, it sustains plants, forests and our ability to grow food. A ...