MANILA: The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) warned of dangerous heat index levels in 44 areas across the country on Saturday.Based on the weather bureau's 5 p.m. forecast on Friday, the following areas may have a heat index ranging from 42°C to 48°C:NAIA Pasay City, Metro Manila - 43°CScience Garden, Quezon City, Metro Manila - 42°CSinait, Ilocos Sur - 45°CLaoag City, Ilocos Norte - 44°CDagupan City, Pangasinan - 48°CMMSU, Batac, Ilocos Norte - 43°CBacnotan, La Union - 45°CAparri, Cagayan - 46°CTuguegarao City, Cagayan - 45°CNVSU Bayombong, Nueva Vizcaya - 42°CISU, Echague, Isabela - 43°CIba, Zambales - 43°CCLSU Muñoz, Nueva Ecija - 42°CClark Airport (DMIA), Pampanga - 43°CBaler (Radar), Aurora - 43°CCasiguran, Aurora - 43°CCubi Pt. Subic Bay Olongapo City - 44°CTayabas City, Quezon - 42°CSangley Point, Cavite - 44°CAmbulong, Tanauan, Batangas - 42°CCoron, Palawan - 43°CSan Jose, Occidental Mindoro - 43°CPuer to Princesa City, Palawan - 42°CAborlan, Palawan - 44°CDaet, Camarines Norte - 42°CLegazpi City, Albay - 43°CVirac (Synop), Catanduanes - 44°CMasbate City, Masbate - 42°CJuban, Sorsogon - 42°CCBSUA-Pili, Camarines Sur - 43°CRoxas City Capiz - 44°CMambusao, Capiz - 42°CIloilo City, Iloilo - 43°CDumangas, Iloilo - 43°CLa Granja, La Carlota, Negros Occidental - 43°CCatarman, Northern Samar - 43°CCatbalogan, Samar - 43°CTacloban City, Leyte - 43°CGuiuan, Eastern Samar - 45°CMaasin, Southern Leyte - 42°CDipolog, Zamboanga del Norte - 42°CZamboanga City, Zamboanga del Sur - 43°CCotabato City, Maguindanao - 43°CButuan City, Agusan del Norte - 43°CPAGASA said heat index is what the temperature feels like to the human body when relative humidity is combined with the air temperature.The bureau advised the public to limit the time spent outdoors, especially at noon, and drink plenty of water.People going outdoors are reminded to use umbrellas, or wear hats and sleeved clot hing.Meanwhile, the easterlies will bring partly cloudy to cloudy skies with isolated rain showers or thunderstorms across the country.The whole archipelago will have light to moderate winds and slight to moderate seas.Source: Philippines News Agency