The state weather bureauPAGASA has issued a heat index warning for Thursday, April 30, 2026, forecasting"danger level" temperatures in seven areas across the Philippines. The announcement comes as the country continues to grapple with rising temperatures linked to an ongoingEl Niño alert.
According to PAGASA's 5 p.m. heat index forecast on Wednesday, the following areas are expected to experience a heat index ranging from42°C to 45°C tomorrow:Aparri (Cagayan),Dagupan City (Pangasinan),NAIA Pasay,Science Garden Quezon City,Pili (Camarines Sur),Roxas City (Capiz), andZamboanga City.
Previously, on April 29, PAGASA warned eight areas would face similar danger-level heat, includingIba (Zambales) andCatarman (Northern Samar). The heat index on Wednesday reached44°C in Dagupan,41°C at NAIA Pasay, and40°C at Science Garden in Quezon City.
Theheat index measures how hot it feels to the human body when relative humidity is combined with air temperature. PAGASA emphasizes that this is not the same as the actual air temperature — it reflects the body's perceived heat stress.
What Does 'Danger Level' Mean?
PAGASA classifies heat index values into four categories:Caution (27°C–32°C),Extreme Caution (33°C–41°C),Danger (42°C–51°C), andExtreme Danger (52°C and above).
A"danger level" heat index of42°C to 51°C means heat cramps and heat exhaustion are likely, and heat stroke is probable with continued exposure. The body struggles to cool itself, leading to strain on theheart andkidneys.
Experts warn that prolonged exposure during outdoor work, commuting, or recreation significantly raises health risks. Vulnerable groups include theelderly,children, and those withpre-existing conditions.
El Niño Alert Still Active
Last week, PAGASA issued anEl Niño Alert as forecast probability rose to70%, with development expected fromJune to August 2026. This climatic phenomenon typically bringsbelow-normal rainfall andhigher temperatures to much of the country.
PAGASA earlier projected that Metro Manila temperatures could reach35°C to 39°C in April and35.5°C to 37.6°C in May, with heat index values possibly exceeding42°C.
The current heat wave aligns with these projections, and the bureau advises the public tostay hydrated,avoid direct sun exposure from 10 a.m. to 3 p.m., andwear light clothing.
Real-World Impact on Filipinos
For millions of Filipinos who work outdoors —construction workers,farmers,vendors, anddelivery riders — the "danger level" heat index poses a daily risk.Heat cramps can occur even during short exposure, whileheat exhaustion symptoms include heavy sweating, weakness, dizziness, and nausea.
In schools without air conditioning, students and teachers facereduced concentration andheat-related illnesses. Some local governments have already shortened class hours or shifted to remote learning during peak heat.
TheDepartment of Health (DOH) reminds the public to recognize early signs of heat stroke:hot dry skin,confusion,unconsciousness, andhigh body temperature above40°C. Immediate medical attention is crucial.
For more safety tips, visit ourWeather category or read aboutPinoyPulse's mission.
What to Do If You Experience Heat Illness
First aid for heat-related conditions includes moving the person to acool shaded area, applyingcool compresses, and givingwater if they are conscious. Do not give sugary or caffeinated drinks.
If symptoms worsen — such asvomiting,fainting, orseizures — call for emergency help immediately. Hospitals in affected areas reportincreased admissions for heat stroke during extreme heat events.
Local government units (LGUs) are advised to set upcooling centers and distributeelectrolyte solutions in public markets and transport terminals.
For a list of PAGASA's latest updates, check their officialFacebook page andnews reports.
Frequently Asked Questions
What is the difference between air temperature and heat index?
Air temperature is the actual temperature measured by a thermometer. Theheat index accounts for humidity, making it feel hotter than the actual air temperature. For example, 35°C with 70% humidity can feel like 45°C.
Which areas are affected on April 30, 2026?
The seven areas areAparri (Cagayan),Dagupan City (Pangasinan),NAIA Pasay,Science Garden Quezon City,Pili (Camarines Sur),Roxas City (Capiz), andZamboanga City.
What should I do if I feel symptoms of heat stroke?
Move to a cool place, remove excess clothing, apply cool compresses to the neck and armpits, and sip water. If you feel confused, faint, or have a high fever, seek medical help immediately.
Future Outlook
With theEl Niño alert still active, PAGASA expects above-normal temperatures to persist through the coming months. The bureau urges all Filipinos toadapt by staying informed, monitoring daily heat index forecasts, and taking proactive measures to protect health.
Long-term strategies includeurban greening,better building insulation, andearly warning systems. The government is also evaluatingheat wave emergency protocols for vulnerable communities.
Stay safe, stay cool, and keep followingPinoyPulse for real-time weather updates and life-saving tips. Learn more aboutwho we are and how we serve the Filipino community.
