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  1. What is the heat index? - National Weather Service

    The heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.

  2. Heat Forecast Tools - National Weather Service

    The Heat Index is a measure of how hot it really feels when relative humidity is factored in with the actual air temperature. To find the Heat Index temperature, look at the Heat Index Chart above …

  3. Heat Information Page - National Weather Service

    The Heat Index (HI) is sometimes referred to as the "apparent temperature" and is a measure of how hot it feels outside to the human body. The HI includes the influence of both the actual air …

  4. Extreme Heat - NOAA's National Weather Service - Glossary

    The Heat Index (HI) or the "Apparent Temperature" is an accurate measure of how hot it really feels when the Relative Humidity (RH) is added to the actual air temperature.

  5. Heat Index Chart - National Weather Service

    4 days ago · Heat Index Chart Weather.gov > Atlanta/Peachtree City, GA > Heat Index Chart Current Hazards Current Conditions Radar

  6. Wet Bulb Globe Temperature vs Heat Index - National Weather …

    â–º Heat Index is more commonly used and understood by the general public - the higher the values the hotter it's going to feel and the higher the threat for heat related illnesses.

  7. Index temperature, look at the Heat Index Chart below or check our Heat Index Calculator. As an example, if the air temperature is 96°F and the relative humidity is 65%, the

  8. Heat

    NOAA's heat alert procedures are based mainly on Heat Index Values. The Heat Index, sometimes referred to as the apparent temperature is given in degrees Fahrenheit. The Heat …

  9. Heat Cramps, Exhaustion, Stroke - National Weather Service

    The Centers for Disease Control and Prevention (CDC) provides a list of warning signs and symptoms of heat illness, and recommended first aid steps. Some of these symptoms and …

  10. National Digital Forecast Database Definitions

    When the temperature at a grid point rises above 80 F, the heat index will be used for Apparent Temperature. Between 51 and 80 F, the Apparent Temperature will be the ambient air …