![]() ![]() This makes it difficult to regulate your body temperature especially in hot and humid and can take a toll on your body. If there’s a high amount of moisture in the air, it’s harder for the sweat on your skin to evaporate back into the atmosphere. When your body gets hot, its natural response is to sweat. You can calculate the heat index yourself by clicking here. The heat index can even be lower than the temperature with a low enough relative humidity. However, if you have an air temperature at 85℉ with a dew point of 60℉ and relative humidity of 45%, it will still feel like 85℉. This new value is considered to be the heat index. For example, an air temperature at 85℉ with a dew point of 70℉, or 63% relative humidity will actually feel like 90℉. The heat index heavily relies on how much moisture there is in the air. The NWS then performed further analysis to develop an equation that would predict heat index values given the current air temperature and relative humidity. Below is a chart of some these values: Photo courtesy of NOAA Enter the air temperature and click the 'Calculate' button to estimate the wind chill temperature. Choose the temperature unit between degrees Fahrenheit, degrees Celsius, or Kelvin. Steadman in 1979 after various studies and analysis. Select the wind speed unit between mph, km/h, m/s, ft/s, knots. The heat index can be calculated using either dew point, or relative humidity values compared with the actual air temperature.įun Fact: The index was developed by Robert G. It is also known as the apparent temperature, which is the temperature perceived by humans. The heat index is defined as how hot the air actually feels like when factoring in both air temperature and relative humidity. This ‘real-feel’ to the air found especially during the “heat” of summer is known as the heat index. Having an air temperature under dry conditions is one story, but feeling that same temperature in a much more humid atmosphere can make the actual temperature feel a whole lot hotter and more uncomfortable than it actually is. ROCHESTER, NY (WROC) – Air temperature can be a tricky thing, especially when there are multiple variables in the air that have an effect on temperature and the way it feels.
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