Science City of Muñoz records Monday’s highest heat index at 47°C

A heat index of 47°C, the day’s highest, was recorded at PAGASA’s synoptic station in Science City of Muñoz in Nueva Ecija, the state weather bureau said Monday.

This high point is followed by Sangley Point in Cavite City and Tuguegarao City with 45°C, and Legazpi City, Ninoy Aquino international Airport in Pasay City and Roxas City with 44°C.

The heat index, or init factor, is the measure of the temperature that a person feels in contrast to the actual air temperature. It is computed by factoring in the humidity as well as the air temperature.

It measures "human discomfort" and is the apparent temperature felt by the human body.

PAGASA warned anew that a heat index ranging from 41°C to 54°C may lead to heat cramps and exhaustion. Heat stroke is also possible amid continuous physical activity.

PAGASA's heat index chart

Meanwhile, the heat index reached 42°C  at the Science Garden in Quezon City at 11 a.m. on Monday.

PAGASA also recorded a maximum temperature of 34°C in the area at 1:50 p.m.

The agency reminded the public to stay indoors and stay hydrated. — Ma. Angelica Garcia/BM, GMA News