Borongan City in Eastern Samar has reported a concerning heat index of 43 degrees Celsius, categorizing it under the 'danger' level, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa).
This reading, recorded on May 8, 2026, matches the previous day's high and follows a peak of 45°C earlier in the week.
Health officials have warned residents of Eastern Visayas to be vigilant against heat-related health risks.
The heat index is expected to remain high, with forecasts indicating similar temperatures for the following days.
In addition to Borongan, Tacloban City also experienced a high heat index of 39°C, categorized under 'extreme caution.'
The Department of Health-Eastern Visayas Center for Health Development (DOH-EVCHD) has issued advisories emphasizing the importance of protecting oneself from heat-related illnesses.
For your safety, the Department of Health emphasizes the risks posed by extreme heat, such as heat stroke and dehydration.
Department of Health-EVCHD
Health officials highlight that symptoms of heat stroke include headache, dizziness, and high body temperature.
To mitigate risks, they recommend limiting outdoor activities, staying hydrated, and wearing appropriate clothing.
The heat index measures how hot it feels when humidity is factored in with air temperature.
Pagasa defines the 'danger' level as a heat index ranging from 42°C to 51°C, where prolonged exposure can lead to serious health issues.
As the dry season continues, rising temperatures are impacting Eastern Visayas and other regions across the country.