Sometimes the temperature outside feels warmer than it is, and there's a reason. Here's a breakdown of the heat index.

Your body can't cool off as quickly during a humid heat wave. Experts say you should make a heat safety plan to prepare for ...

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

With a heat wave causing excessive heat warnings in Delaware, you'll hear a lot about the heat index this week. What to know ...

Wet-bulb temperature is calculated using a specific equation that considers dry-bulb temperature and relative humidity. It can also be easily deduced by reading a Psychrometric Chart, such as the ...

Relative humidity (RH) measures the amount of moisture in the air compared to the amount of total moisture the air can hold at a given temperature — for example, 55 F (13 C), as shown in the ...

The National Weather Service offers tools to help you understand the heat index. One is the heat index chart, which lets you match the air temperature with the relative humidity to see what it ...

We tend to measure humidity in terms of Relative Humidity (RH). This looks at how much water vapour there is in the air compared to how much there could be at that temperature.

Also, keep your pets cool and indoors. If your pet is exposed to extreme heat, the AKC suggests getting your dog to a shady spot, applying ice packs under the dog's front legs and chest, and pouring ...