The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said 24 locations may record heat index values in the “danger” category on Tuesday, April 16.
PAGASA said Dagupan City, Pangasinan may experience a heat index of 46℃, while Aparri, Cagayan; Aborlan, Palawan; Central Bicol State University of Agriculture (CBSUA) station Pili, Camarines Sur; Iloilo City, Iloilo; and Zamboanga City, Zamboanga may register a heat index of 43℃.
Meanwhile, a heat index of 42℃ may be recorded in the Ninoy Aquino International Airport (NAIA) station in Pasay City; Laoag City, Ilocos Norte; Tuguegarao City, Cagayan; Isabela State University (ISU) station in Echague, Isabela; Clark Airport station in Pampanga; Central Luzon State University (CLSU) station in Muñoz, Nueva Ecija; Baler radar in Aurora; Casiguran, Aurora; Sangley Point, Cavite; Ambulong, Tanauan, Batangas; Coron, Palawan; San Jose, Occidental Mindoro; Puerto Princesa City, Palawan; Virac synop station in Cataduanes; Masbate City, Masbate; Roxas City, Capiz; Dumangas, Iloilo; and Catarman, Northern Samar.
PAGASA defines the heat index as the measurement of how hot it feels when relative humidity is combined with the actual air temperature.
It said a heat index ranging from 42°C to 51°C indicates imminent "danger," as "heat cramps and heat exhaustion are likely," and "heat stroke is probable with continued activity."
PAGASA recorded the country’s highest heat index so far this year on March 27 in Roxas City, Capiz at 48°C.