This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. ROCHESTER, N.Y. (WROC) — Throughout the ...

The temperature on any given summer day may be in the 80s or 90s. So why does it feel so much hotter and oppressive at times? That's the heat index doing its thing. Here's how it works: What is the ...

Extreme levels of heat and humidity are forecast to spread across the country over the next two weeks, blanketing the Southwest, Midwest, and East Coast with high temperatures beginning this June 19 ...

The short answer is both terms are different and describe different things about moisture in the air. The dew point is another temperature value. It is the temperature air needs to cool to become ...

A temperature of over 100 degrees doesn’t paint the whole picture when it comes to determining how hot it feels. The heat index does. What is the heat index? “It is essentially what temperature feels ...

Relative humidity measures how much moisture is in the air compared to how much it could hold at a given temperature. It is simply the dew point temperature divided by the air temperature, times 100.

There are multiple ways to describe how wet the air is (yes, pretty much all air is wet). What I mean by that is there are water molecules tucked in between the gases like nitrogen and oxygen that ...

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