Last updated: May 3, 2025
Awareness of the UV Index in Aquiles Serdan (San Fernando) is crucial for safeguarding your skin from the sun's harmful rays. Understanding UV levels can help you prevent sunburn and maintain long-term skin health, especially in a region known for its Af climate, which brings intense sunlight for significant portions of the year. With peak UV readings soaring to 14 around midday, residents and visitors alike must stay informed about daily exposure risks to enjoy the sun safely while protecting their skin from unnecessary damage.
At dawn, the UV Index begins its leisurely climb, starting at a mild 1 by 7:00 AM and maintaining that level until 9:00 AM. Then, the sun takes center stage, with the index skyrocketing to a maximum of 14 by 1:00 PM, indicating intense sun exposure. The peak occurs at 12:00 PM with a striking 13, signaling the perfect time to seek shade or don protective gear. As the afternoon progresses, UV levels begin to taper off, descending to 10 by 3:00 PM and then down to 1 again by the time the sun sets at 7:00 PM. This hour-by-hour journey serves as a reminder to stay vigilant and protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
During the year, the UV Index experiences significant fluctuations, with the highest risk months spanning from February to October, particularly peaking in April and June at an index of 14. These months are categorized as having extreme exposure, meaning a burn can occur in as little as 10 minutes. As we transition into the later part of the year, the UV Index gradually decreases, dropping to 9 in November and 8 in December, both of which are classified as very high, allowing for a slightly longer burn time of 15 minutes. Visitors and residents should take precautions during the high-risk months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sunlight hours to mitigate the risk of UV-related health issues.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aquiles Serdan (San Fernando) | 9 | 11 | 13 | 14 | 13 | 14 | 13 | 13 | 13 | 12 | 9 | 8 |
| Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
| Iztapalapa UVI | 10 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 8 |
| Ecatepec de Morelos UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Mexico City UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |