By GMA News Published May 23, 2026 7:25pm + Add GMA on Google Make this your preferred source to get more updates from this publisher on Google. More than 30 areas across the country are expected to experience "danger" level heat index on Sunday, May 24, 2026, the state weather bureau PAGASA said.According to PAGASA’s heat index forecast, the following areas may record heat index levels ranging from 42°C to 46°C:46°CDagupan City, PangasinanSan Ildefonso, BulacanSangley Point, Cavite City, CaviteSan Jose, Occidental Mindoro45°CLaoag City, Ilocos NorteAparri, CagayanTuguegarao City, CagayanISU Echague, IsabelaIba, ZambalesTAU Camiling, Tarlac44°CNAIA Pasay City, Metro ManilaDMMMSU Bacnotan, La UnionNVSU Bayombong, Nueva VizcayaBaler (Radar), AuroraCasiguran, AuroraCLSU Muñoz, Nueva EcijaCubi Pt., Subic Bay, Olongapo CityHacienda Luisita, Tarlac CityCuyo, PalawanRoxas City, Capiz43°CScience Garden, Quezon City, Metro ManilaSinait, Ilocos SurMMSU, Batac, Ilocos NorteCalayan, CagayanAmbulong, Tanauan, BatangasAlabat, QuezonCoron, PalawanAborlan, Palawan42°CClark Airport (DMIA), PampangaInfanta, QuezonNAS-UPLB, Los Baños, LagunaPuerto Princesa City, PalawanDaet, Camarines NorteLegazpi City, AlbayVirac (Synop), CatanduanesMasbate City, MasbateCBSUA-Pili, Camarines SurMambusao, CapizMeanwhile, 37 areas are expected to experience “extreme caution” heat index levels ranging from 33°C to 41°C, mostly in the regions of Negros Island, Central Visayas, Eastern Visayas, Zamboanga Peninsula, Northern Mindanao, Davao, BARMM, SOCCSKSARGEN, and Caraga.Baguio City, Benguet, is the only area forecast to experience “caution” heat index level at 27°C.The following areas are expected to record “not hazardous” heat index levels:BSU, La Trinidad, Benguet - 25°CBenguet Radar, Tuba, Benguet – 20°CHeat 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. It also recommended drinking lots of water and avoiding the intake of tea, coffee, alcohol, and sodas. —Lyjah Tiffany Bonzo/VBL, GMA News