‘Danger level’ heat index seen in 37 areas on Wednesday, May 21, 2025

A “danger level” heat index is expected in 37 areas across the country on Wednesday, May 21, PAGASA said in a forecast.

According to the state weather bureau’s 5 p.m. May 20 bulletin, the synoptic stations in the following areas will measure a 42°C-46°C heat index:

46°C

• Dagupan City, Pangasinan
• Apparri, Cagayan

45°C

• Laoag City, Ilocos Norte
• Tuguegarao City, Cagayan

44°C

• Sinait, Ilocos Sur
• MMSU, Batac, Batac, Ilocos Norte
• Baler (Radar), Aurora
• San Jose, Occidental Mindoro
• Daet, Camarines Norte
• Masbate City
• Iloilo City

43°C

• Bacnotan, La Union
• ISU Echague, Isabela
• Casiguran, Aurora
• Cubi Pt., Subic Bay Olongapo City
• TAU Camiling, Tarlac
• Coron, Palawan
• Cuyo, Palawan

42°C

• Calatan, Cagayan
• Iba, Zambales
• Clark Airport (DMIA), Pampanga
• Hacienda Luisita, Tarlac City
• Sangley Point, Cavite City
• Ambulong, Tanauan, Batangas
• Infanta, Quezon
• Alabat, Quezon
• NAS-UPLB, Los Baños, Laguna
• Calapan, Oriental Mindoro
• Legazpi City, Albay
• Virac (Synop), Catanduanes
• CBSUA-Pili, Camarines Sur
• Roxas City, Capiz
• Dumangas, Iloilo
• Catarman, Northern Samar
• Borongan, Eastern Samar
• Dipolog, Zamboanga del Norte
• Butuan City, Agusan Del Norte

The state weather bureau categorizes areas with a 42°C to 51°C heat index to be in the "danger" category, with a risk for heat stroke.

The Department of Health has advised Filipinos who have prolonged sun exposure to drink as much as 10 glasses of water daily, with the heat index reaching up to a dangerous 50°C in some areas in the country. –NB, GMA Integrated News