39 areas to experience 'danger' heat index on May 31, 2026 —PAGASA

At least 39 areas will be under the "danger" level heat index on Sunday, May 31, 2026, the state weather bureau PAGASA said.

According to PAGASA’s five-day heat index forecast on Saturday, the following areas may record "danger" heat index levels ranging from 42°C to 45°C:

45°C

Baler (Radar), Aurora

Casiguran, Aurora

CBSUA-Pili, Camarines Sur

Borongan, Eastern Samar

44°C

Laoag City, Ilocos Norte

Dagupan City, Pangasinan

Tuguegarao City, Cagayan

Iba, Zambales

Sangley Point, Cavite City, Cavite

Alabat, Quezon

Virac (Synop), Catanduanes

43°C

NAIA Pasay City, Metro Manila

Science Garden, Quezon City, Metro Manila

Sinait, Ilocos Sur

DMMMSU Bacnotan, La Union

Aparri, Cagayan

CLSU Muñoz, Nueva Ecija

San Ildefonso, Bulacan

TAU Camiling, Tarlac

Hacienda Luisita, Tarlac City

Tayabas City, Quezon

Infanta, Quezon

Masbate City, Masbate

Juban, Sorsogon

Surigao City, Surigao Del Norte

Hinatuan, Surigao Del Sur

Butuan City, Agusan Del Norte

42°C

MMSU, Batac, Ilocos Norte

Calayan, Cagayan

Clark Airport (DMIA), Pampanga

Cubi Pt., Subic Bay, Olongapo City

Ambulong, Tanauan, Batangas

Mulanay, Quezon

NAS-UPLB, Los Baños, Laguna

Calapan, Oriental Mindoro

Daet, Camarines Norte

Legazpi City, Albay

Catarman, Northern Samar

Tacloban City, Leyte

Meanwhile, the following areas in Benguet are forecast to experience "not hazardous" heat index levels:

Baguio City - 25 °C

BSU La Trinidad, Benguet - 25 °C

Benguet Radar, Tuba, Benguet - 20 °C

The heat index refers to the temperature felt by the human body when relative humidity is combined with actual air temperature. High humidity slows the evaporation of sweat, making it more difficult for the body to cool down.

PAGASA advised the public to limit their time outside, and use umbrellas or caps when outdoors. The state weather bureau also recommended drinking lots of water and avoiding intake of tea, coffee, and sodas. — Lyjah Tiffany Bonzo/VBL, GMA News