By GMA News Published May 27, 2026 11:46pm + Add GMA on Google Make this your preferred source to get more updates from this publisher on Google. At least 53 areas are under the "danger" level heat index on Thursday, May 28, 2026, according to PAGASA.Based on PAGASA’s five-day heat index forecast, the following areas may record "danger" heat index levels ranging from 42°C to 51°C, with the highest recorded in Sangley Point in Cavite with 47°C:47°CSangley Point, Cavite City, Cavite46°CTuguegarao City, Cagayan San Ildefonso, Bulacan45°CLaoag, Ilocos Norte Dagupan City, Pangasinan Aparri, Cagayan Casiguran, Aurora TAU Camiling, Tarlac Ambulong, Tanauan, Batangas Borongan, Eastern Samar44°CNAIA, Pasay City, Manila Sinait, Ilocos Sur DMMMSU, Bacnotan, La Union Calayan, Cagayan ISU Echague, Isabela CLSU, Munoz, Aurora Hacienda Luisita, Tarlac Tayabas, Quezon Alabat, Quezon Coron, Palawan Cuyo, Palawan Masbate City, Masbate CBSUA Pili, Camarines Sur43°CMMSU, Batac, Ilocos Norte Baler (Radar), Aurora Iba, Zambales Clark Airport (DMIA), Zambales Cubic Pt., Subic Bay, Olongapo City Mulanay, Quezon NAS, UPLB, Los Banos San Jose, Occidental Mindoro Romblon, Romblon Daet, Camarines Norte Legazpi City, Albay Virac (Synop), Catanduanes BIA Daraga, Albay Roxas City, Capiz Dumangas, Iloilo Tacloban City, Leyte VSU Baybay, Leyte Guiuan, Eastern Samar Surigao City, Surigao del Norte Hinatuan, Surigao del Sur42°CScience Garden, Quezon City Infanta, Quezon Calapan, Oriental Mindoro Juban, Sorsogon Iloilo City, Iloilo Mactan International Airport, Cebu Catarman, Northern Samar Maasin, Southern Leyte Dipolog, Zamboanga del Norte Butuan City, Agusan del NorteMeanwhile, there are 25 areas expected to experience “extreme caution” heat index levels ranging from 33°C to 41°C.41°CBasco (Radar), Batanes NVSU Bayombong, Bueva Ecija BU Guinobatan, Albay Mambusao, Capiz Dumaguete City, Negros Oriental Siquijor, Siquijor Panglao International Airport, Bohol Catbalogan, Western Samar40°CCVSU Indang, Cavite Puerto Princesa City, Palawan Aborlan, Palawan Zamboanga City, Zamboanga del Sur Davao City, Davao del Sur39°CItbayat, Batanes Abucay, Bataan La Granja, La Carlota, Negros Occidental Laguindingan Airport, Misamis Oriental Cotabato City, Maguindanao del Norte38°CTanay, Rizal CMU Agromet, Musuan, Bukidnon36°CGeneral Santos City, South Cotabato34°CMalaybalay, BukidnonBaguio City, Benguet is one of three area forecast to experience "not hazardous" heat index level at 26°C, with 25°C in BSU La Trinidad, Benguet and the lowest with 21°C in Benguet Radar, Tuba, Benguet.The heat index refers to the temperature felt by the human body when relative humidity is combined with actual air temperature. High humidity slows the evaporation of sweat, making it more difficult for the body to cool down.PAGASA advised the public to limit their time outside, and use umbrellas or caps when outdoors. The state weather bureau also recommended drinking lots of water and avoiding intake of tea, coffee, and sodas. — BAP, GMA News