Ano nga ba ang ‘Init Factor’? A brief explainer on the Heat Index

It’s no news that this summer has been unbearably hot so far. For the people who’ve been glued to weather reports on TV, you might’ve noticed something called the heat index. It’s usually higher than actual air temperature, but what is it?

 

According to PAGASA, the heat index is the “measure of the contribution that high humidity makes with abnormally high temperatures in reducing the body's ability to cool itself.” 

 

The heat index is the temperature the body feels, compared to the actual air temperature. The difference is caused by the humidity level interacting with the actual air temperature. Our bodies cool down by sweating, but higher levels of humidity mean that your perspiration doesn’t evaporate so your body has difficulty cooling off.

Here's a short video explanation from US-based meteorologist Vince Condella (although his explanation involves temperatures in Fahrenheit, not Celsius, the concept is still the same): 

 

Beating the heat

 

The Department of Health (DOH) has issued a list of causes and symptoms of heat stroke, along with tips how to avoid it or help someone suffering from it.

 

 

“Heat stroke is a medical emergency! Bring the patient immediately to the hospital after instituting emergency measures,” the DOH said. — TJD, GMA News