When you hear the term “heat index” in the forecast, it’s usually paired with a much higher number than the actual ...

Learn how to stay safe during a heat wave, including symptoms of heat stroke, risk factors, and how to cool down in extreme ...

Happening now: The threat of flooding rain and severe storms has ended for most of the D.C. area (outside of Southern ...

The National Oceanic and Atmospheric Administration says people should start exercising “caution” when the heat index reaches ...

How do heat and poor air quality affect health in Rochester? Due to climate change, "We're projected to get both hotter and more humid; we are likely to see 135 degrees heat index in the next 10 ...

NOAA has a chart that shows how the heat index is affected by humidity. For example, a day that is 90 degrees Fahrenheit (32 Celsius) can hit the “danger” level with 70% humidity.

NOAA has a chart that shows how the heat index is affected by humidity. For example, a day that is 90 degrees Fahrenheit (32 Celsius) can hit the “danger” level with 70% humidity.

"Dangerous heat will intensify across much of the Northeast and Mid-Atlantic early this week," meteorologist Jacob Hinson said.

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

Within those constraints, finding ways to stay hydrated and lower your body temperature are paramount. You can do this by drinking lots of fluids, wetting clothing or putting cold water or a cold rag ...