Abstract: The Philippines is currently grappling with some of the hottest temperatures on record, presenting substantial public health challenges. Alarmingly, the temperature in Metro Manila reached a staggering 38.8 degrees Celsius (°C) this year, producing a perilous heat index (i.e., “feels like” temperature) of 45 °C due to high humidity. This recent spike in heat has surpassed the previous record set in 1915, and with Philippine Atmospheric, Geophysical and Astronomical Services Administration’s (PAGASA) reporting that heat indices could potentially soar above 52 °C in certain areas, the risk to public health is significant. According to the Department of Health, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) classified temperatures ranging from 33–41 °C as “extreme caution” levels, while 42–51 °C falls into the “danger” category. Temperatures of 52 °C and above are classified as “extreme danger”, where heat stroke is imminent. This issue is not confined to the Philippines, as many Asian countries are experiencing unprecedented heatwaves, making this a broader regional crisis that demands urgent attention and action.

Keywords: Heat Index, School Closure, Public Health