The Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA) expects that more than 30 areas will record danger-level heat indices on Tuesday, May 7.

PAGASA warns that the heat index could reach up to 46 degrees Celsius in Dagupan City, Pangasinan.

Other areas that could register danger-level heat indices include:

• The Ninoy Aquino International Airport in Pasay City;
• Science Garden in Quezon City;
• Sinait, Ilocos Sur;
• Laoag City, Ilocos Norte;
• Mariano Marcos State University in Batac, Ilocos Norte;
• Bacnotan, La Union;
• Aparri, Cagayan;
• Tuguegarao City, Cagayan;
• Isabela State University in Echague, Isabela;
• Iba, Zamabales;
• Clark Airport in Pampanga;
• Central Luzon State University in Munoz, Nueva Ecija;
• Baler, Aurora;
• Casiguran, Aurora;
• Subic Bay, Olongapo City;
• Sangley Point, Cavite;
• Alabat, Quezon;
• Coron, Palawan;
• San Jose, Occidental Mindoro;
• Puerto Princesa City, Palawan;
• Aborlan, Palawan;
• Cuyo, Palawan;
• Virac, Catanduanes;
• Masbate City, Masbate;
• The Central Bicol State University of Agriculture in Pili, Camarines Sur;
• Roxas City, Capiz;
• Iloilo City, Iloilo;
• Dumangas, Iloilo;
• Catarman, Northern Samar;
• Catbalogan, Samar;
• Tacloban City, Leyte;
• Guiuan, Eastern Samar;
• Dipolog, Zamboanga Del Norte;
• Davao City, Davao Del Sur;
• Cotabato City, Maguindanao; and
• Butuan City, Agusan Del Norte.

Based on data from PAGASA, the heat index went up to as high as 50 degrees Celsisus on Monday, May 6, in Clark Airport.