Last updated: July 2, 2025
In Penjamillo de Degollado, Mexico, understanding the UV Index is crucial for protecting your skin and overall health. The UV levels can peak dramatically, particularly in the midday sun, making awareness essential to prevent sunburn and reduce long-term skin damage. With a Cwb climate characterized by high-altitude exposure, residents and visitors face unique risks—especially during the sun's strongest hours. By monitoring the UV Index, you can make informed decisions about outdoor activities and safeguard your skin against harmful ultraviolet rays. Stay informed and enjoy the beautiful Mexican sun safely!
The UV Index for the day reveals a dramatic rise in sun exposure as the hours progress. Starting at a mere 0 at 07:00, it gently climbs to 1 by 08:00, before making a noticeable leap to 2 at 09:00. The sun really starts to assert its power around 10:00, with a UV Index of 4, reaching 7 by 11:00. The peak intensity occurs at 12:00, where it soars to a staggering 11, followed closely by a maximum of 13 at both 13:00 and 14:00. As the afternoon wanes, the intensity begins to decline, falling to 12 at 15:00, then tapering down to 9 at 16:00. The evening offers some respite, with the index dropping to 6 at 17:00, 3 by 18:00, and finally settling at 1 as the sun sets at 19:00. This pattern highlights the importance of sun protection during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 13 | 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 |
Throughout the year, the UV Index shows notable seasonal variations, peaking in the months from March to October. During this period, particularly from February to September, the UV Index consistently reaches extreme levels, with burn times as short as 10 minutes. The highest recorded value occurs in April at 15, followed closely by March and May at 14. The months of January, November, and December have a very high UV Index (9-10) but with longer burn times of 15 minutes. Visitors and residents should take proactive measures to protect their skin, especially during the high-risk months when the UV Index exceeds 10. Wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during peak hours (10 AM to 4 PM) are essential to minimize the risk of UV-related skin damage.
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 |
| Penjamillo de Degollado | 9 | 11 | 14 | 15 | 14 | 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 |