Sa Casiguran, Aurora naranasan ngayon ang pinakamataas na heat index, sa 48 degrees Celsius (°C).
Base ito sa monitoring ng Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).
Ito ay pasok sa “danger level” sa 42°C hanggang 51°C heat indexes at maaring magdulot ng “heat cramps and heat exhaustion.”
May 27 lugar pa sa bansa ang nakaranas ng napakataas na heat indexes;
Legazpi City, Albay (47°C)
Masbate City, Masbate (47°C)
Guiuan, Eastern Samar (46°C)
Davao City, Davao del Sur (45°C)
Alabat, Quezon (44°C)
Baler, Aurora (44°C)
Calapan City, Oriental Mindoro (44°C)
Dipolog City, Zamboanga del Norte (44°C)
Laoag City, Ilocos Norte (44°C)
Virac, Catanduanes (44°C)
Ambulong, Tanauan, Batangas (43°C)
Aparri, Cagayan (43°C)
Borongan, Eastern Samar (43°C)
Daet, Camarines Norte (43°C)
Dagupan City, Pangasinan (43°C)
Juban, Sorsogon (43°C)
Ninoy Aquino International Airport, Pasay City (43°C)
Roxas City, Capiz (43°C)
San Jose, Occidental Mindoro (43°C)
Surigao City, Surigao del Norte (43°C)
Tuguegarao City, Cagayan (43°C)
Catarman, Northern Samar (42°C)
Central Luzon State University, Muñoz, Nueva Ecija (42°C)
Infanta, Quezon (42°C)
Mactan International Airport, Cebu (42°C)
Sangley Point, Cavite (42°C) at
Tacloban City, Leyte (42°C)
Nanatili naman na pinakamataas na heat index na naitala ngayon taon ay 50°C sa Legazpi City, Albay noong nakaraang Mayo 12.