The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) warned on Friday, April 25 that heat indices in 29 areas across the country could rise to dangerously high levels on Saturday, April 26.

PAGASA said these areas may experience heat indices ranging from 42 to 45°C, which fall within the “danger” classification for heat-related illnesses.

Based on PAGASA’s forecast, the highest projected heat index is in Muñoz, Nueva Ecija where temperatures could feel like 45°C.

A heat index of 44°C may also be felt in San Jose, Occidental Mindoro.

Thirteen areas may record a heat index of 43°C. These are Dagupan City, Pangasinan; Bacnotan, La Union; Tuguegarao City, Cagayan; Echague, Isabela; Olongapo City, Zambales; Tanauan, Batangas; Infanta, Quezon; Coron, Palawan; Puerto Princesa City, Palawan; Legazpi City, Albay; Pili, Camarines Sur; and Iloilo City, Iloilo.

Meanwhile, 14 locations may see heat indices reaching 42°C. These are Laoag City, Ilocost Norte; Batac, Ilocos Norte; Aparri, Cagayan; Baler, Aurora; Camiling, Tarlac; Tayabas City, Quezon; Mulanay, Quezon; Los Baños, Laguna; Cuyo, Palawan; Daet, Camarines Norte; Masbate City, Masbate; Roxas City, Capiz; Dumangas, Iloilo; and Catarman, Northern Samar.

PAGASA reminded the public that heat indices between 42°C and 51°C are dangerous as individuals are at increased risk of heat cramps and heat exhaustion, while prolonged exposure may lead to heatstroke, especially among vulnerable populations.

The agency advised staying hydrated, avoiding outdoor activities during peak heat hours, and seeking shade or air-conditioned spaces when possible.