Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of the City of Isabela, Philippines, where tropical climates bring consistent exposure to the sun. With UV levels peaking at a high of 13 around midday, awareness of these fluctuations is vital for preventing sunburn and safeguarding skin health. By staying informed about UV risks, individuals can better protect themselves from harmful radiation, particularly during the hottest hours of the day. In this vibrant city, characterized by warm weather throughout the year, knowledge of the UV Index not only empowers residents to enjoy the sunshine safely but also promotes overall well-being in the face of increasing UV exposure.
From 7:00 AM to 6:00 PM, the UV Index experiences a dramatic evolution. It starts low at 1 just after sunrise, but as the sun climbs higher, the index peaks at an intense 13 from 11:00 AM to 12:00 PM. This period warns outdoor enthusiasts to take necessary precautions against harmful UV rays. By 1:00 PM, the UV Index begins its decline, dropping to 9 by 2:00 PM, and further to a safe 5 by 3:00 PM. The evening brings a return to lower levels, with the UV Index falling to 1 by 5:00 PM and fading to 0 after 6:00 PM. In summary, while midday hours hold the most potential for sun exposure risks, the later hours offer respite as the sun sets.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index data reveals extremely high levels of solar radiation throughout the year, with January through April registering the highest values. March stands out as the peak month, reaching a remarkable UV Index of 16, indicating a burn time of just 10 minutes for exposed skin. Other high-risk months include February, April, and August, each with a UV Index between 15 and 16, suggesting consistent danger during these periods. Visitors and residents are strongly advised to take precautionary measures during these months, including wearing protective clothing, using sunscreen with high SPF, and seeking shade, especially when outdoors for extended periods. Remember, with such extreme levels of UV radiation, it is crucial to stay informed and prioritize skin safety all year round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Caloocan City UVI | 11 | 13 | 15 | 15 | 13 | 14 | 13 | 14 | 14 | 13 | 10 | 10 |
| Quezon City UVI | 11 | 13 | 15 | 15 | 13 | 14 | 13 | 14 | 14 | 13 | 10 | 10 |
| Manila UVI | 11 | 13 | 14 | 14 | 13 | 13 | 13 | 14 | 14 | 13 | 10 | 10 |
| Budta UVI | 13 | 15 | 16 | 16 | 14 | 13 | 14 | 14 | 15 | 14 | 13 | 11 |
| Davao UVI | 13 | 15 | 16 | 15 | 15 | 13 | 14 | 14 | 15 | 14 | 13 | 11 |
| City of Isabela | 13 | 15 | 16 | 16 | 15 | 13 | 13 | 15 | 15 | 14 | 13 | 12 |