Heat Index Calculator

Enter the value that you want to calculate heat index.

Fill in the temperature plus humidity and click on ‘Calculate’ to calculate the Heat Index temperature and categories.(Only above 20°C.)
Temperature (°C)
Humidity (%)

Heat Index (°C)
Description

Frequently Asked Questions:

1. How do I calculate heat index?
   The heat index is calculated using a formula that incorporates air temperature and relative humidity. Various online calculators and meteorological tools are available for precise calculations.
2. What is a heat index of 110?
   A heat index of 110 indicates extremely hot conditions with increased risk of heat-related illnesses. It signifies dangerously high levels of heat and humidity, requiring caution and protective measures.
3. What does 80 humidity feel like?
   An 80% humidity level can feel very muggy and uncomfortable. It often leads to a sensation of stickiness and difficulty in evaporating sweat, making it feel hotter than the actual temperature.
4. How is humidex calculated?
   Humidex is calculated based on air temperature and dew point. It provides an index of how hot it feels to the human body by taking into account the combined effects of temperature and humidity.
5. What is the heat index?
   The heat index, also known as the "feels-like" temperature, is a measure of how hot it feels when relative humidity is factored in with the actual air temperature.
6. What is the unit of heat index?
   The unit of heat index is typically expressed in degrees Celsius or Fahrenheit, indicating the perceived temperature based on the combined effects of temperature and humidity.
7. How to calculate temperature?
   Temperature can be measured using various instruments such as a thermometer. The temperature is usually indicated in degrees Celsius (°C) or Fahrenheit (°F), representing the degree of hotness or coldness of a substance or environment.
8. Is 20°C hot or cold?
   A temperature of 20°C is generally considered mild and comfortable for most people. It is neither too hot nor too cold, often referred to as room temperature.
9. Is 70% humidity high?
   Yes, a humidity level of 70% is considered high. It can feel quite muggy and uncomfortable, especially when combined with higher temperatures, leading to difficulties in evaporating sweat.
10. Is 100% humidity good?
    A humidity level of 100% indicates saturated air, which can feel oppressive and uncomfortable. It may lead to condensation and moisture-related issues.
11. Is 100% high humidity?
    Yes, 100% humidity indicates that the air is holding the maximum amount of moisture it can at a given temperature. It is considered very high humidity and can lead to feelings of stickiness and discomfort.
12. Is 30 humidity good?
    A humidity level of 30% is relatively low and is often considered comfortable for most people. It typically indicates dry air, which may be beneficial for certain activities and environments.
13. How to calculate humidity?
    Humidity can be calculated using various methods, including using a hygrometer to measure the amount of water vapor present in the air relative to the maximum amount it can hold at a given temperature.
14. How to calculate heating factor?
    The heating factor can be calculated using the formula for specific heat capacity, which takes into account the mass of the substance, its specific heat capacity, and the change in temperature.
15. Why is humidex used?
    Humidex is used to provide an indication of how hot it feels to the human body by considering the combined effects of temperature and humidity. It helps assess the potential impact of heat stress on health and well-being.
16. How is heat index formula derived?
    The heat index formula is derived from empirical studies and meteorological data, which correlate air temperature and relative humidity to the perceived temperature. It aims to provide a more accurate representation of how hot it feels to the human body.
17. What is the heat index of 178?
    A heat index of 178°F (or approximately 81°C) is exceptionally high and can pose severe health risks. Extreme caution should be exercised in such conditions to prevent heat-related illnesses.
18. How are heat units calculated?
    Heat units can be calculated using various formulas depending on the specific context. For example, in agriculture, heat units for crop growth are often calculated based on accumulated temperature values over time.
19. Is 20°C hot or cold?
    A temperature of 20°C is generally considered mild and comfortable for most people. It is neither too hot nor too cold, often referred to as room temperature.
20. How is the heat index used?
    The heat index is used by meteorologists and health professionals to assess the potential impact of heat on human health and safety. It helps determine the level of heat stress and the associated risks of heat-related illnesses.