Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of San Vicente el Alto, Mexico, where intense sunlight can significantly impact skin health. With a climate characterized by a temperate Cwb zone, the risk of sunburn is heightened especially during midday when UV levels soar to a maximum of 14. By being aware of these UV levels, you can take proactive measures to protect your skin, prevent sunburn, and reduce the risk of long-term damage. As you explore this beautiful area, keep an eye on the UV Index, especially from 11:00 AM to 2:00 PM, when the sun’s rays are at their most potent.
As the sun rises, the UV Index starts at a gentle 1 at 7:00 AM, indicating minimal sun exposure risk. By 9:00 AM, it climbs to 2, showcasing the gradual intensification of sunlight. The peak arrives at 12:00 PM with a striking 12, signaling a high risk of harm from unprotected sun exposure. This intensity continues through 1:00 PM and 2:00 PM, where it reaches its maximum of 14—a reminder to seek shade and apply sunscreen. As the afternoon progresses, the UV Index begins to taper off, dropping to 9 at 4:00 PM, and ending the day at a safer 1 by 7:00 PM. Stay sun-smart, especially during the peak hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 1 | low | 45 min |
09:00 | 2 | low | 45 min |
10:00 | 5 | moderate | 30 min |
11:00 | 9 | very high | 15 min |
12:00 | 12 | extreme | 10 min |
13:00 | 14 | extreme | 10 min |
14:00 | 14 | extreme | 10 min |
15:00 | 12 | extreme | 10 min |
16:00 | 9 | very high | 15 min |
17:00 | 6 | high | 25 min |
18:00 | 3 | moderate | 30 min |
19:00 | 1 | low | 45 min |
The UV Index experiences significant fluctuations throughout the year, with the highest values occurring between February and September. During these months, particularly from March to May, the index reaches extreme levels, peaking at 15 in May. January, November, and December show relatively high UV readings, with a "very high" exposure category, but the risk of sunburn is notably lower, allowing for 15 minutes of safe exposure. Visitors and residents are strongly advised to take precautions during high-risk months by seeking shade, wearing protective clothing, and applying sunscreen every two hours to minimize the risk of skin damage. Stay vigilant, as even short exposure times can be harmful during peak UV periods.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
San Vicente el Alto | 9 | 11 | 14 | 14 | 15 | 14 | 13 | 13 | 14 | 12 | 10 | 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 |