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The humidex (short for humidity index) is an index number used by Canadian meteorologists to describe how hot the weather feels to the average person, by combining the effect of heat and humidity. The term humidex was coined in 1965. [ 1 ]
Extreme danger: When the heat index is 125 degrees or higher, heat stroke is likely. Heat Index calculator. Here's a chart to help you find out what the heat index is. You can also use this heat ...
A heat index of 103 or greater is considered dangerous, based on the National Weather Service heat index chart. The peak heat index forecast for the Rochester area will be 103 degrees on Wednesday ...
A generalized view of the heat index showing how the perception of heat by the human body increases with temperature but more rapidly at higher humidity levels. The heat index of a given combination of temperature and humidity is defined as the dry-bulb temperature which would feel the same if the water vapor pressure were 1.6 kPa. Quoting ...
The heat index explains why humidity makes a difference. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium ...
A heat advisory is a notice issued by the National Weather Service of the United States.Local offices often have their own criteria. High values of the heat index are caused by temperatures being significantly above normal and high humidities, and such high levels can pose a threat to human life through conditions such as heat stroke.
In the week beginning May 12, five daytime heat records were broken, including May 15's 98 degrees, which broke a 1992 record by four degrees.
The heat index -- what temperature it feels like with humidity -- soared to a scorching 115 degrees in Chicago on Tuesday. Chicago's actual temperature hit 99 degrees, breaking the city's daily ...