Manila: Twenty-eight areas in the country will experience sweltering temperatures due to a danger-level heat index, the weather bureau said Saturday. Heat index is what the temperature feels like to the human body when relative humidity combines with air. According to Philippines News Agency, a peak heat index of 44°C is forecast in Laoag, Ilocos Norte; Camiling, Tarlac; Sangley Point, Cavite City, Cavite; Cuyo, Palawan; Roxas City, Capiz; and Dumangas, Iloilo, as reported by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA). The following areas will also see danger-level heat indices: NAIA, Pasay City - 42°C; Science Garden, Quezon City - 42°C; Sinait, Ilocos, Sur - 42°C; Dagupan City, Pangasinan - 43°C; MMSU, Batac, Ilocos Norte - 43°C; Bacnotan, La Union - 43°C; Aparri, Cagayan - 43°C; Tuguegarao City, Cagayan - 43°C; ISU, Echague, Isabela - 43°C; Clark Airport (DMIA), Pampanga - 42°C; CLSU Muñoz, Nueva Ecija - 43°C; Cubi Point, Subic Bay, Olongapo - 43°C; Infanta , Quezon - 42°C; Alabat, Quezon - 43°C; Mulanay, Quezon - 42°C; San Jose, Occidental Mindoro - 43°C; Iloilo City, Iloilo - 43°C; Guiuan, Eastern Samar - 42°C; Dipolog, Zamboanga del Norte - 42°C; Zamboanga City, Zamboanga del Sur - 42°C; Laguindingan Airport, Misamis Oriental - 42°C; Butuan City, Agusan del Norte - 43°C. Heat cramps and heat exhaustion are likely under a danger-level heat index of 42°C to 51°C. Meanwhile, the heat index may reach 41°C in areas such as Casiguran, Aurora; Iba, Zambales; San Ildefonso, Bulacan; Hacienda Luisita, Tarlac City; and several other locations. A heat index of 40°C is forecast over Baler, Aurora; NAS-UPLB, Los Baños, Laguna; Calapan, Oriental Mindoro; Coron, Palawan; and other areas. Meanwhile, the whole country will experience partly cloudy to cloudy skies with isolated rain showers or thunderstorms due to the easterlies. Extreme Northern Luzon and the eastern section of the country will experience moderate to strong winds and moderate to rough seas. The rest of the archipelago will experience light to moderate winds and slight to moderate seas. PAGASA stated that a tropical cyclone outside the Philippine Area of Responsibility was last spotted 1,165 km east of northeastern Mindanao, packing sustained winds of 75 kph, gustiness of up to 90 kph, and moving westward at 20 kph.