Heat index hits dangerous levels in 43 areas, Guiuan tops at 47°C

The heat index reached dangerous levels across the Philippines on Tuesday, with Guiuan in Eastern Samar logging a sweltering 49°C on Wednesday, surpassing previous forecasts.

Forty-three areas are forecasted to experience peak heat indices of or above 42°C on Thursday, including Dagupan City at 46°C and Laoag City at 45°C. Guiuan is expected to reach a peak of 47°C, the highest in the country.

Dangerous levels of heat index increase the risk for heat-related illnesses such as cramps, exhaustion, and stroke; PAGASA advises limiting outdoor activities, staying hydrated, wearing protective clothing, scheduling strenuous tasks during cooler parts of the day, and avoiding sodas, iced tea, coffee, and alcoholic drinks.

The list includes other areas like Tuguegarao City at 44°C, Bacnotan in La Union at 44°C, and Naia Pasay City with a peak of 43°C. The heat index is the measure of how high humidity contributes to reducing the body's ability to cool itself.

To avoid these health risks, the Department of Health has reiterated the importance of staying hydrated and protecting oneself from sun exposure through loose clothing and protective gear.