Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of San Isidro Vista Hermosa, Mexico, where the sun’s intensity can peak dramatically, particularly in the midday hours. Protecting your skin from harmful UV rays is essential for preventing sunburn and promoting long-term skin health. With a temperate climate characterized by both wet and dry seasons, San Isidro Vista Hermosa experiences significant UV exposure, especially between 11:00 AM and 2:00 PM when indices soar to 15. Staying informed about the UV Index helps you enjoy the beautiful outdoors while safeguarding your health.
The UV Index today presents a clear picture of the sun's intensity as it rises throughout the day. Starting softly at 1 during the early hours (07:00 and 08:00), it quickly escalates to 3 by 09:00. The highest point arrives at 12:00, peaking at a striking 13. The heat continues to climb, reaching its zenith with a 15 at both 13:00 and 14:00. As the afternoon progresses, the intensity begins to wane, dropping to 9 by 16:00, then further to 6 at 17:00. Finally, as evening approaches, the index tapers off to 1 by 19:00, marking a sharp decline in UV exposure. It's a day to more than just enjoy the sun—protective measures are essential in the midday 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 | 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 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits significant seasonal variation, with particularly high levels from February to September, where it consistently reaches extreme levels. The highest recorded UV Index occurs in March, April, May, June, and July at 15, signaling a 10-minute burn time for exposed skin. Visitors and residents should be especially vigilant during these months, taking precautions to protect their skin from potential sunburn and long-term damage. January, November, and December experience slightly lower UV Index values of 10 and 9, categorized as very high, allowing for a slightly longer burn time of 15 minutes. Regardless of the month, it is advisable to wear sunscreen, protective clothing, and sunglasses to ensure safety from harmful UV exposure throughout the year.
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 |
| 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 |
| San Isidro Vista Hermosa | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 12 | 10 | 9 |