How do I calculate heat index?
To find the Heat Index temperature, look at the Heat Index Chart above or check our Heat Index Calculator. As an example, if the air temperature is 96°F and the relative humidity is 65%, the heat index–how hot it feels–is 121°F. The red area without numbers indicates extreme danger.
How do you calculate heat index from humidity and temperature?
Heat index chart. In order to determine the heat index using the chart above, you need to know the air temperature and the relative humidity. For example, if the air temperature is 100°F and the relative humidity is 55%, the heat index will be 124°F.
What is heat index value?
The heat index is a calculated temperature value of how hot it feels, according to the air temperature and the amount of moisture in the air. This value is calculated by taking the relative humidity or dewpoint value for a specific location and factoring it into the air temperature reading.
What does a heat index of 105 mean?
Heat Index: 105-129. degrees F. Health Effect: Sunstroke, heat cramps and heat exhaustion are likely. Heat stroke is. possible with prolonged exposure and/or physical activity.
What is the heat index for 95 degrees?
Heat Index
| 0% | 70% | |
|---|---|---|
| 95 | 87 | 124 |
| 90 | 83 | 106 |
| 85 | 78 | 93 |
| 80 | 73 | 85 |
How do you calculate heat index?
– T = Temperature in Celsius – Tg = Globe Thermometer Temperature (in Celsius) – this is measured by a thermometer placed in a special black globe to estimate solar radiation without the effects of the light – Tw = Wet-bulb Temperature (in Celsius)
What is the equation for heat index?
Use Heat Index Formula. Solution: Given: First, covert 85 °C by using formula F= frac {9} {5}C + 32 gives 185 °F Heat Index (HI) = c 1 + c 2 T + c 3 R + c 4 TR + c 5 T 2 + c 6 R 2 +c 7 T 2 R+c 8 TR 2 + c 9 T 2 R 2
What state has the highest heat index?
The highest natural ground surface temperature ever recorded may have been an alleged reading of 93.9 °C (201.0 °F) at Furnace Creek, California, United States on 15 July 1972. In recent years a ground temperature of 84 °C (183.2 °F) has been recorded in Port Sudan, Sudan.
How to calculate heat index?
Their work finds large projected gains from shifting production away from the most affected crops. As the world warms, gradual evolution in the crop mix chosen by local producers in the coming decades could substantially offset some of the potential losses. Just as some crops suffer disproportionately from global warming, some regions do too.