It’s hot. The thermometer says it’s 90 but your phone says it “feels like” 95. What does that mean? The heat index, or “feels like” temperature, is a way to express how hot it feels to the human body.

Some hot days feel even worse thanks to high humidity, trapped heat and dew points. Cities are especially vulnerable. By Nazaneen Ghaffar Nazaneen Ghaffar is a reporter on The Times’s weather team. It ...

LOUISVILLE, Ky. — It’s that time of the year again when heat and humidity cause sweltering temperatures across Kentucky and southern Indiana. You’ve likely heard about the heat index mentioned once or ...

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

Micki Olson receives funding from the National Oceanic and Atmospheric Administration and the Federal Emergency Management Agency. You’ve probably heard people say, “It’s not the heat, it’s the ...

Tonight features an isolated risk for a downpour before midnight. With light winds, recent rainfall and clearing skies, patchy dense fog will form, which could reduce visibilities to below a quarter ...

National Weather Service observations at Lehigh Valley International Airport show the heat index entered the triple digits Monday morning. What’s that mean? Well, it’s hot, of course — as anyone can ...

HELLO. HI, CAM. LOOKING GOOD BEHIND ME, SMOOTHIE KING CENTER. AND OF COURSE THE SUPER DOME. REAL TIME TEMPERATURES MILD TONIGHT, BUT IT’S MORE ABOUT THE HUMIDITY STARTING TO MAKE A RETURN. WHEN ARE WE ...

For this summer, the National Oceanic and Atmospheric Administration (NOAA) has predicted hotter-than-average temperatures across the U.S. Summer heat is expected to reach its peak in July, with a ...

Discover how weather conditions affect idiopathic pulmonary fibrosis (IPF) symptoms and learn practical tips to manage your ...