Metro Manila, 24 other areas to reach ‘dangerous’ heat index level on Black Saturday

A total of 25 areas in the county, including Metro Manila, were forecast to have a heat index under the “danger” level on Black Saturday, April 19, 2025, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said.

Based on the report released on Good Friday, the following areas will experience danger level heat index (42°C to 51°C):

44°C

• Ambulong, Tanauan, Batangas   
• Infanta, Quezon   

43°C

• NAIA, Pasay City   
• Tuguegarao City, Cagayn   
• Cubi Pt., Subic Bay, Olongapo City   
• San Idelfonso, Bulacan   
• Iloilo City, Iloilo   
• Dumangas, Iloilo   
• Catarman, Northern Samar   
• Zamboanga City, Zamboanga del Sur   

42°C

• Dagupan City, Pangasinan   
• ISU Echague, Isabela   
• CLSU Muñoz, Nueva Ecija   
• Tayabas City, Quezon   
• Sangley Point, Cavite City   
• Coron, Palawan   
• San Jose, Occidental Mindoro   
• Puerto Princesa City, Palawan   
• Cuyo, Palawan   
• Roxas City, Capiz   
• Mambusao, Capiz   
• La Granja, La Carlota, Negros Occidental   
• Catbalogan, Western Samar   
• Tacloban City, Leyte   
• Dipolog, Zamboanga del Norte   

The following areas may experience  33°C to 41°C heat based (Extreme Caution) based on forecast:

41°C

• Science Garden, Quezon City   
• Bacnotan, La Union   
• Aparri, Cagayan   
• Clark Airport (DMIA), Pampanga   
• Alabat, Quezon   
• NAS-UPLB, Los Baños, Laguna   
• Aborlan, Palawan   
• Masbate City, Masbate   
• Cotabato City, Maguindanao   
• Butuan City, Agusan del Norte    

40°C

• Casiguran , Aurora   
• Iba, Zambales   
• TAU Camiling, Tarlac   
• Hacienda Luisita, Tarlac   
• CvSU-Indang, Cavite   
• Calapan, Oriental Mindoro   
• Daer, Camarines Norte   
• Legazpi City, Albay   
• Juban, Sorsogon   
• CBSUA-Pili, Camarines Sur   
• BU-Guinobatan, Albay   
• VSU-Baybay, Leyte   
• Borongan, Eastern Samar   
• Davao City, Davao del Sur   

39°C

• Laoag City, Ilocos Norte   
• MMSU, Batac, Ilocos Norte   
• Virac (Synop), Catanduanes   
• Baler (Radar), Aurora   
• Mulanay, Quezon   
• Dumaguete City, Negros Oriental   
• Siquijor, Siquijor   
• Guiuan, Eastern Samar   
• Surigao City, Surigao del Norte   
• Hinatuan, Surigao del Sur   

38°C

• Sinait, Ilocos Sur   
• Calayan, Cagayan   
• NVSU Bayombong, Nueva Vizcaya   
• Romblon, Romblon   
• BIA-Daraga, Albay   
• Panglao International Airport, Bohol   
• Mactan International Airport, Cebu   
• Maasin, Southern Leyte   
• Laguindingan Airport, Misamis Oriental   

37°C

• General Santos City, South Cotabato   

35°C

• Itbayat, Batanes   
• Abucay, Bataan   
• CMU Agromet, Musuan, Bukidnon   

34°C

• Basco (Radar), Batanes   

33°C

• Tanay, Rizal   
• Malaybalay, Bukidnon   

Meanwhile, Baguio City in Benguet and BSU in La Trinidad, Benguet will experience the lowest heat indices in the country with 27°C and 28°C respectively, both falling under the Caution category.

PAGASA categorizes areas with 42°C to 51°C heat index under the danger category, while areas with 52°C and above fall under extreme danger.

Heat stroke is imminent in areas under extreme danger, while heat cramps, exhaustion and heat stroke are probably risks under the danger level.

PAGASA advises the public to limit outdoor activites, remain hydrated and wear fresh clothes to avoid heat-related illnesses. —Jiselle Anne Casucian/LDF, GMA Integrated News