21/10/2026
⚠️ VISAYAS AND MINDANAO TO FACE DANGEROUSLY HIGH UV RAYS TOMORROW! LOW RISK FOR NORTHERN LUZON DUE TO TYPHOON CHAMPI ☀️🥵
UV RADIATION FORECAST BULLETIN
(Model Run: October 21, 2026 | Forecast Run: October 22, 2026)
Based on the latest Copernicus Atmosphere Monitoring Service (CAMS) data via Windy, EXTREME UV RADIATION is forecasted over key regions in Mindanao, while HIGH TO VERY HIGH UV Index levels will affect broad areas across Luzon, Visayas, and Mindanao tomorrow, October 22, 2026. Meanwhile, LOW TO MODERATE levels will persist in Northern Luzon due to heavy cloud cover associated with Typhoon Champi.
Here is the complete breakdown of affected regions and provinces:
LIST OF AFFECTED AREAS BY CATEGORY
🟣 EXTREME UV RADIATION (Violet Zone - Highest Threat Level):
▪️ LUZON: None
▪️ VISAYAS: None
▪️ MINDANAO: Agusan del Sur, Basilan, Bukidnon (Eastern and Southern portions), Davao de Oro, Davao del Norte, Davao Oriental, Sulu, Surigao del Sur, Zamboanga del Norte (Southern portion), Zamboanga del Sur, and Zamboanga Sibugay
🔴 HIGH TO VERY HIGH UV RADIATION (Orange to Red Zone):
▪️ LUZON: Abra (Western and Southern portions), Albay, Bataan, Batangas, Benguet, Bulacan, Camarines Norte, Camarines Sur, Catanduanes, Cavite, Ifugao (Southern portion), Ilocos Sur, Isabela (Southern portion), La Union, Laguna, Marinduque, Masbate, Metro Manila, Mountain Province (Western portion), Nueva Ecija, Nueva Vizcaya, Occidental Mindoro, Oriental Mindoro, Palawan, Pampanga, Pangasinan, Quezon, Quirino, Rizal, Romblon, Sorsogon, Tarlac, and Zambales.
▪️ VISAYAS: Aklan, Antique (Northern and Southern portions), Biliran, Bohol, Capiz (Northern and Eastern portions), Cebu, Eastern Samar, Guimaras, Iloilo (Northern and Southern portions), Leyte, Negros Occidental (Northern and Eastern portions), Negros Oriental (Southeastern portion), Northern Samar, Samar, Siquijor, and Southern Leyte.
▪️ MINDANAO: Agusan del Norte, Bukidnon (Northern portion), Camiguin, Cotabato, Davao del Sur, Davao Occidental, Dinagat Islands, Lanao del Norte, Lanao del Sur, Maguindanao del Norte, Maguindanao del Sur, Misamis Occidental, Misamis Oriental, Sarangani, South Cotabato, Sultan Kudarat, Surigao del Norte, Tawi-Tawi, and Zamboanga del Norte (Northern portion).
🟢🟡 LOW TO MODERATE UV RADIATION (Green to Yellow Zone):
▪️ LUZON: Abra (Northeastern portion), Apayao, Batanes (Itbayat ~28°C), Cagayan (Tuguegarao ~29°C), Ifugao (Northern portion), Ilocos Norte, Isabela (Northern and Central portions), Kalinga, and Mountain Province (Eastern portion).
▪️ VISAYAS: Antique (Central portion), Capiz (Central and Southwestern portions), Iloilo (Central portion), Negros Occidental (Central and Southwestern portions), and Negros Oriental (Central and Southwestern portions).
▪️ MINDANAO: None
EXPLANATION OF UV INDEX LEGEND
🟣 Extreme (Violet): The highest threat level on the UV Index scale. Unprotected skin and eyes can burn or suffer damage within minutes of direct exposure.
🔴 High to Very High (Orange to Red): High risk of harm from sun exposure. Proper protection is required when spending time outdoors.
🟢🟡 Low to Moderate (Green to Yellow): Low to moderate UV radiation levels. Generally safe, but basic sun protection is still recommended around midday.
💡 IMPORTANT WEATHER FACTS ABOUT UV RADIATION
AIR TEMPERATURE DOES NOT EQUAL UV RADIATION:
Ambient temperature (heat or coolness felt) comes from Infrared Rays, while UV Radiation comes from Ultraviolet Rays. For instance, in cool places like Baguio or Benguet, the UV Index can still reach Very High to Extreme levels! Never rely solely on cool temperatures to skip sun protection.
RAINFALL AND CLOUDS DO NOT BLOCK UV RAYS ENTIRELY:
UV rays pe*****te thin clouds and light rainshowers. As long as daylight is present between 10:00 AM and 4:00 PM, UV radiation remains active and elevated unless thick, dense storm clouds are present.
RECOMMENDED HEALTH PRECAUTIONS
▪️ Apply broad-spectrum Sunscreen (SPF 30+) at least 20 minutes before heading outdoors.
▪️ Use an umbrella, wear UV-blocking sunglasses, wide-brimmed hats, and long-sleeved clothing.
▪️ Drink plenty of water to prevent dehydration and heat-related illnesses.
SOURCE: CAMS UV Index via Windy (Model Run: October 21, 2026 | Forecast Run: October 22, 2026)