Heat Index Chart In Centigrade

Below is a chart based on the NWS equation that can be used to estimate temperature and the level of danger associated with varying relative humidity percentages. Potential effects of heat index. As described above, the heat index is the temperature equivalent perceived by humans as a result of air temperature, relative humidity, and wind speed.

Heat Index Chart and Explanation. WPC Heat Index Forecasts More Meteorological Conversions and Calculations . NOAA National Weather Service National Centers for Environmental Prediction Weather Prediction Center 5830 University Research Court College Park, Maryland 20740 Weather Prediction Center Web Team Disclaimer

Kestrel Heat Index Reference Guide Celsius Note Geat index guidelines make the following assumptions The person is 5'7quot, 147 lbs Clothing long trousers and short-sleeved shirt Note This Heat Index chart is designed to provide general guidelines for assessing the potential severity of heat stress . Individual

Figure 1. Heat index chart. In order to determine the heat index using the chart above, you need to know the air temperature and the relative humidity. For example, if the air temperature is 100F and the relative humidity is 55, the heat index will be 124F. When the relative humidity is low, the apparent temperature can actually be lower

Definition of Heat Index The heat index is an estimate of how hot the air quotfeelsquot to the human body and provides a relative indication of potential health risks. Among others, the two primary factors in the heat index equations are temperature and water vapor i.e., moisturehumidity. Humidity affects the efficacy of perspiration to evaporatively cool the skin.

Heat Index Possible heat disorders for people in high risk groups Extreme Danger 130F or higher 54C or higher Heat stroke or sunstroke likely. Danger 105 - 129F 41 - 54C Sunstroke, muscle cramps, andor heat exhaustion likely. Heatstroke possible with prolonged exposure andor physical activity. Extreme Caution 90 - 105F 32

Heat Index Chart Temperature EF Relative Humidity 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 Likelihood of Heat Disorders with Prolonged Exposure andor Strenuous Activity ' Caution ' Extreme Caution ' Danger ' Extreme Danger. nORR . Created Date

To use the chart, locate the air temperature along the left column and the relative humidity along the top. The cell where the two intersect is the heat index. For example, an air temperature of 90 F and a relative humidity of 60 intersect at a heat index of 100.

Humidex Table A Celsius heat index Canadian meteorologists devised the Celsius humidex table below, while the U.S. National Weather Service was responsible for developing the Fahrenheit heat index above. The humidex table also produces a single figure in degrees Celsius that reflects how hot, humid air actually feels.

The 'Heat Index' is a measure of how hot weather quotfeelsquot to the body. This table uses relative humidity and air temperature to produce the quotapparent temperaturequot or the temperature the body quotfeelsquot. These values are for shady locations only. Exposure to full sunshine can increase heat index values by up to 15F. Also, strong winds,