Heat Index Calculator This calculator estimates heat index temperature felt by the human body based on the actual measured air temperature together with humidity level or dew point
What is the heat index? - National Weather Service If you are exposed to direct sunlight, the heat index value can be increased by up to 15°F As shown in the table below, heat indices meeting or exceeding 103 ° F can lead to dangerous heat disorders with prolonged exposure and or physical activity in the heat
Heat index - Wikipedia 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
Heat Index Calculation - Weather Prediction Center Choose the appropriate calculator and enter the values Then click "Calculate" * Please note: The Heat Index calculation may produce meaningless results for temperatures and dew points outside of the range depicted on the Heat Index Chart linked below
Heat Index ChartHeat Index Chart - National Oceanic and Atmospheric . . . Temperature Relative Humidity The ‘Heat Index’ is a measure of how hot weather "feels" to the body This table uses relative humidity and air temperature to produce the "apparent temperature" or he temperature the body "feels" These val es are for shady locations only Exposure to full sunshine can increase
Heat Index Calculator | Good Calculators Use this Heat Index Calculator to calculate the heat index (HI) based on air temperature (T) and relative humidity (RH) How to use this calculator Enter the relative humidity and click the "Calculate" button to determine the heat index temperature (i e , how hot it feels)
Heat Index Calculator Charts - iWeatherNet Definition of Heat Index: The heat index is an estimate of how hot the air “feels” 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 , moisture humidity)
Heat Index - The Engineering ToolBox Equivalent heat index vs air temperature and relative humidity - in degrees Fahrenheit and Celsius The heat index can be used to indicate how an average person will perceive temperature and humidity and the human body ability to cool it self
Heat Index Calculator - Online Calculator Shop Free online Heat Index Calculator - instantly calculate feels-like temperature based on actual temperature and humidity Easy to use tool for weather analysis and heat safety planning
The Heat Index: How It’s Calculated and What It Means For example, an air temperature of 90°F with a relative humidity of 70% will result in a heat index of approximately 106°F If you drink from a bamboo straw on such days, you might find that your beverage heats up quicker than expected due to the high heat index