MANILA, Philippines — The state weather bureau PAGASA has issued a heat index warning for Thursday, April 23, 2026, as three specific areas in the Philippines are expected to reach a scorching 41°C. This level falls under the “Extreme Caution” category, where heat cramps and heat exhaustion are highly likely, and continued activity could lead to heatstroke.
The forecast comes as the country continues to grapple with a prolonged dry spell exacerbated by the ongoing energy and water crisis.
According to the latest advisory from the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), the following areas will experience the most intense heat today:
- Dagupan City, Pangasinan: 41°C
- Aparri, Cagayan: 41°C
- Abra Province: 41°C
Meanwhile, Metro Manila is expected to hover between 38°C and 40°C, remaining within the “Caution” to “Extreme Caution” threshold.
The heat index, also known as the “human-perceived temperature,” is a measure of how hot it actually feels when relative humidity is combined with the air temperature.
- Caution (27°C–32°C): Fatigue is possible with prolonged exposure and activity.
- Extreme Caution (33°C–41°C): Heat cramps and heat exhaustion are likely.
- Danger (42°C–51°C): Heatstroke is probable with continued exposure.
- Extreme Danger (52°C and above): Heatstroke is imminent.
Health experts and PAGASA advise the public to take the following precautions to avoid heat-related illnesses:
- Limit Outdoor Activities: Avoid direct sunlight between 10:00 AM and 4:00 PM, when UV radiation and temperatures are at their peak.
- Hydration is Key: Drink plenty of water even if you do not feel thirsty. Avoid tea, coffee, soda, and alcohol, as these can lead to dehydration.
- Dress Appropriately: Wear lightweight, light-colored, and loose-fitting clothing to allow your body to cool down naturally.
- Check on the Vulnerable: Ensure that children and the elderly—who are at higher risk for heatstroke—stay in well-ventilated or air-conditioned environments.
The persistent heat is also placing a strain on the nation’s utilities. The Department of Energy (DOE) noted that the heat index surge has pushed power demand to record levels, as households and businesses increase air-conditioning usage. Additionally, the Department of Agriculture (DA) warned that the high temperatures, combined with the lack of rainfall, are further threatening the survival of remaining palay crops in Northern Luzon.
PAGASA reminded the public that while the heat index is high, isolated thunderstorms may still occur in the late afternoon or evening, providing temporary relief but often increasing humidity shortly after.