A small fan whirrs in the background as Fawad Khan, of South Philly, works over a hot griddle in his food cart at 21st and Washington Streets on Thursday. It's a hot business.38 minutes ago
“Seriously, has the humidity in the region ever been this bad for this long? To my memory the humidity this summer has been the most intense and sustained that I’ve ever known.”Have something you’re wondering about the Philly region? Submit your Curious Philly question here. “We had such a long, cool spring that went into the early part of June, a lot of people may not be quite as acclimated as they would be by late July,” said Sarah Johnson, the warning coordination meteorologist at the National Weather Service Office in Mount Holly.
When the heat index reached 101 on Thursday, the temperature at Philadelphia International Airport was 93, and the humidity was an unimpressive sounding 50%. At 6 a.m., it was 94%, but it was 74 degrees, and at that temperature it was near saturation.The “dewpoint” is a measure of absolute moisture in the air. It’s the temperature at which the air would be saturated and water vapor would condense into droplets, or more or less comes out of hiding.
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