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 ...

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 ...

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 ...

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 ...

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

Temperatures this week are some of the hottest we have seen the entire year now as we get to the end of July. This is a perfect opportunity to explain what the Heat Index is and how it is all ...

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 ...

GOOD MORNING. IT’S A. IT’S GROSS. I MEAN, MY GOODNESS, IT WAS SO BAD YESTERDAY. AND THAT’S GOING TO CONTINUE TODAY. IT’S NOT SO MUCH THE TEMPERATURE. IT’S THE HUMIDITY. AND WE’RE POPPING DEW POINTS.