Last updated: August 1, 2025
In El Barrancon del Tio Blas, Mexico, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. With its BSh climate, this vibrant area experiences significant UV exposure throughout the day, peaking at a striking UV Index of 11 between noon and 2 PM. Understanding these levels not only helps protect against harmful effects of sun exposure but also promotes overall well-being, making it essential for both locals and visitors alike. Stay informed and enjoy the beautiful sunrays responsibly!
The UV Index throughout the day exhibits a dramatic rise, peaking during the midday hours. Starting off at a low of 1 at 07:00 and 08:00, the index climbs steadily to reach 8 by 11:00. Just after noon, the sun asserts its strength, with the index soaring to a maximum of 11 from 13:00 to 14:00—a clear signal to seek shade or wear protective gear. As the afternoon progresses, the intensity begins to wane, dropping to 9 at 15:00, and gradually tapering off to 2 by 18:00. As the sun sets, the index returns to a mellow 1 by 19:00, offering a gentle respite after a vibrant day in the sun.
| 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 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV Index levels display significant seasonal changes, with the highest values occurring from February to September. During this period, April, May, June, July, August, and September consistently show an extreme UV exposure category, where the burn time drops to just 10 minutes. February and March also present very high UV levels, with a burn time of only 15 minutes. Visitors and residents should be particularly cautious during these high-risk months, ensuring they wear adequate sun protection such as sunscreen, clothing, and hats, and seek shade whenever possible. In contrast, the winter months of November, December, and January show a reduction in UV levels, categorized as high, with a longer burn time of 25 minutes, though caution should still be exercised. Overall, awareness and preparation are vital for safe outdoor activities year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| El Barrancon del Tio Blas (El Barrancon) | 6 | 9 | 10 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 7 | 6 |
| 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 |