ILOILO CITY, (Philippines): Large parts of Visayas are expected to experience dangerous heat index levels in the coming days, with some areas projected to reach as high as 42°C to 44°C.
This information comes from the Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa).
Data released as of 5pm on Thursday (April 9) showed that several stations across Western, Central and Eastern Visayas were already under the “danger” classification.
This temperature is expected to persist until Saturday (April 11).
In Western Visayas (Region VI), Dumangas, Iloilo recorded one of the highest heat indices at 43°C on April 5, and then, it registered at 42°C on April 9.
Iloilo City peaked at 41°C earlier in the week and is projected to sustain heat indices of around 40°C over the next two days.
Roxas City, Capiz also reached 40°C, indicating widespread extreme heat across the region.
Pagasa said these areas fall under the “danger” category, where prolonged exposure may lead to heat cramps, heat exhaustion, and even heat stroke.
In Central Visayas (Region VII), conditions are expected to intensify further.
Catarman, Northern Samar recorded a peak heat index of 44°C—among the highest in the Visayas—while forecast values remain at 42°C.
Meanwhile, Mactan, Cebu and Panglao, Bohol are expected to range from 36°C to 38°C, still under the “extreme caution” category.
Eastern Visayas (Region VIII) is also experiencing elevated heat levels, with stations in Catbalogan, Tacloban and Borongan registering heat indices between 39°C and 41°C.
Forecasts show these may rise to 40°C in the coming days, keeping the region under “danger” to “extreme caution” levels.
The heat index, which measures how hot it feels by combining air temperature and humidity, is a more accurate indicator of human discomfort and health risk than temperature alone.
Pagasa warned that heat indices between 33°C and 41°C fall under “extreme caution,” while values between 42°C and 51°C are classified as “danger,” where heat-related illnesses become more likely with prolonged exposure.
Authorities urged residents to limit outdoor activities, stay hydrated, and seek shade or cooler environments during peak hours, typically between 10am and 4pm.
Local government units across Visayas have also issued advisories, especially for vulnerable groups such as children, the elderly and outdoor workers, as the country experiences an intense dry season. - Philippine Daily Inquirer/ANN
