Apparent Temperature Calculator

In physics and engineering, understanding apparent temperature and apparent weight is essential. Our apparent temperature calculator pairs well with the apparent weight calculator, providing insights into various physical phenomena.

How to Use the Apparent Temperature Calculator

The Apparent Temperature Calculator is a tool designed to calculate the apparent temperature based on temperature, humidity, and wind speed. Apparent temperature, also known as the feels like temperature, takes into account various weather factors to estimate how the weather conditions are perceived by humans. This calculator finds its significance in providing a more accurate representation of how the weather feels, considering the combined effects of temperature, humidity, and wind speed.

Instructions for Utilizing the Calculator

To utilize the Apparent Temperature Calculator, follow these steps:

1. Temperature: Enter the temperature value in degrees Celsius (°C). Temperature represents the measure of the warmth or coldness of the air.
2. Humidity: Enter the humidity value as a percentage (%). Humidity refers to the amount of moisture present in the air.
3. Wind Speed: Enter the wind speed value in meters per second (m/s). Wind speed indicates the rate at which air is moving horizontally.
4. Pressure: Enter the pressure value in hectopascals (hPa). Pressure represents the force exerted by the atmosphere at a given point.
5. Latitude: Enter the latitude value in degrees (°). Latitude specifies the angular distance of a location from the equator.
6. Longitude: Enter the longitude value in degrees (°). Longitude specifies the angular distance of a location from the prime meridian.
7. Elevation: Enter the elevation value in meters (m). Elevation refers to the height above sea level.
8. Local Time: Enter the local time for the calculation.

Once you have provided all the necessary input data, click the Calculate Apparent Temperature button.

Output Interpretation

The Apparent Temperature Calculator provides the following output information:

1. Temperature: The entered temperature value is displayed for reference.
2. Humidity: The entered humidity value is shown.
3. Wind Speed: The entered wind speed value is displayed.
4. Pressure: The entered pressure value is shown.
5. Latitude: The entered latitude value is displayed.
6. Longitude: The entered longitude value is displayed.
7. Elevation: The entered elevation value is shown.
8. Local Time: The entered local time is displayed.
9. Apparent Temperature: The calculated apparent temperature value is presented in degrees Celsius (°C). The apparent temperature takes into account the temperature, humidity, wind speed, and other factors to estimate how the weather conditions are perceived. It provides an indication of how the weather feels to humans.

Apparent Temperature Calculation Formula

The apparent temperature calculation formula used by the Apparent Temperature Calculator is as follows:

e = 6.11 * exp(5417.7530 * ((1 / 273.16) - (1 / (temp + 273.16)))) / 273.16

h = (0.5555) * (e - 10.0)

twc = temp + h

twcAdj = twc - (((1.5 * wind) + 14.0) * ((1.0 - (0.01 * humid)) * 0.5 - 1.0))

In these formulas, the apparent temperature is calculated by first determining the vapor pressure (e) and then calculating the heat index (h). The total wind chill (twc) is obtained by adding the heat index to the temperature. Finally, the adjusted apparent temperature (twcAdj) considers the effects of wind speed and humidity on the perceived temperature.

Illustrative Example

Let's consider an example to illustrate how to use the Apparent Temperature Calculator. Suppose we have the following weather conditions: temperature of 25°C, humidity of 70%, wind speed of 5 m/s, pressure of 1013 hPa, latitude of 40°, longitude of -75°, elevation of 100 meters, and local time of 12:00 PM.

1. Enter Temperature: Input 25°C in the temperature field.
2. Enter Humidity: Input 70% in the humidity field.
3. Enter Wind Speed: Input 5 m/s in the wind speed field.
4. Enter Pressure: Input 1013 hPa in the pressure field.
5. Enter Latitude: Input 40° in the latitude field.
6. Enter Longitude: Input -75° in the longitude field.
7. Enter Elevation: Input 100 meters in the elevation field.
8. Enter Local Time: Input 12:00 PM in the local time field.

After clicking the Calculate Apparent Temperature button, the calculator will provide the following results:

• Temperature: 25°C
• Humidity: 70%
• Wind Speed: 5 m/s
• Pressure: 1013 hPa
• Latitude: 40°
• Longitude: -75°
• Elevation: 100 meters
• Local Time: 12:00 PM
• Apparent Temperature: The calculated apparent temperature value (e.g., 23.5°C)

Therefore, the apparent temperature considering the given weather conditions is approximately 23.5°C.

Illustrative Table Example

The table above demonstrates the usage of the Apparent Temperature Calculator with different weather conditions and the corresponding apparent temperature results.

The Apparent Temperature Calculator is a valuable tool for estimating the apparent temperature based on temperature, humidity, and wind speed. By inputting the necessary data, users can obtain an understanding of how the weather conditions feel to humans, considering factors beyond just the temperature. This information is useful for planning outdoor activities, assessing comfort levels, and taking appropriate precautions based on perceived weather conditions.