Aparri heat index to peak at 47°C on May 31, says Pagasa

Aparri in Cagayan province is forecast to have a peak heat index of 47ºC as 42 other areas nationwide are likewise predicted to feel dangerously high temperatures on Friday, May 31, 2024, says the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (Pagasa). INQUIRER FILES / STOCK IMAGE

MANILA, Philippines — Aparri in Cagayan province was forecast to have a peak heat index of 47ºC as 42 other areas nationwide would feel dangerously high temperatures on Friday, May 31, the state weather agency said.

The “danger” level heat indices come even as the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (Pagasa) declared the onset of the rainy season in the country on May 29.

Pagasa defines heat index as the “measure of the contribution that high humidity makes with abnormally high temperatures in reducing the body’s ability to cool itself.”

READ: Pagasa declares official start of rainy season

It also explained that heat ranging from 42ºC to 51ºC falls under the “danger category” due to increased risk of high temperature-related illnesses such as heat cramps, heat exhaustion, and even heat stroke.

Below is the list of 42 other areas forecast to record a heat index of or above 42ºC (in descending order) on May 31:

• Laoag City, Ilocos Norte – 46ºC
• Dagupan City, Pangasinan – 46ºC
• Tuguegarao City, Cagayan – 46ºC
• MMSU, Batac, Ilocos Norte – 45ºC
• Catarman, Northern Samar – 45ºC
• Baler (Radar), Aurora – 45ºC
• Casiguran, Aurora – 45ºC
• Alabat, Quezon – 45ºC
• Sinait, Ilocos Sur – 44ºC
• Bacnotan, La Union – 44ºC
• ISU Echague, Isabela – 44ºC
• Infanta, Quezon – 44ºC
• Virac (Synop), Catanduanes – 44ºC
• Catbalogan, Samar – 44ºC
• Tacloban City, Leyte – 44ºC
• Butuan City, Agusan del Norte – 44ºC
• Sangley Point, Cavite – 43ºC
• Ambulong, Tanauan Batangas – 43ºC
• Masbate City, Masbate – 43ºC
• CBSUA-Pili , Camarines Sur – 43ºC
• Mambusao, Capiz – 43ºC
• Guiuan, Eastern Samar – 43ºC
• Maasin, Southern Leyte – 43ºC
• Zamboanga City, Zamboanga del Sur – 43ºC
• Naia Pasay City, Metro Manila – 42ºC
• Calayan, Cagayan – 42ºC
• NVSU Bayombong, Nueva Vizcaya – 42ºC
• Iba, Zambales – 42ºC
• CLZU Muñoz, Nueva Ecija – 42ºC
• Calapan, Oriental Mindoro – 42ºC
• San Jose, Occidental Mindoro – 42ºC
• Puerto Princesa City, Palawan – 42ºC
• Daet, Camarines Norte – 42ºC
• Legazpi City, Albay – 42ºC
• Juban, Sorsogon – 42ºC
• Roxas City, Capiz – 42ºC
• Iloilo City, Iloilo – 42ºC
• Dumangas, Iloilo – 42ºC
• Mactan International Airport, Cebu – 42ºC
• Siquijor, Siquijor – 42ºC
• VSU-Baybay, Leyte – 42ºC
• Dipolog, Zamboanga del Norte – 42ºC