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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 given value of relative humidity causes larger increases in the heat index at higher temperatures. For example, at approximately 27 °C (81 °F), the heat index will agree with the actual temperature if the relative humidity is 45%, but at 43 °C (109 °F), any relative-humidity reading above 18% will make the heat index higher than 43 °C. [5]
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 ]
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 ...
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 ...
Print/export Download as PDF; Printable version; In other projects Wikidata item; ... → Heat index for 90 °F, RH 57% = 98.6 {{heat index|95|57 ...
Make sure you know your options as this condition can cause occupational illnesses, injuries or even death. Here are some symptoms of heat stress: Heat stroke. Heat exhaustion. Heat rashes. Heat ...
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.