Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in San Isidro Chinantilla, Mexico, where the climate is characterized by high sun exposure and intense UV radiation. With UV levels soaring to a maximum of 14 during midday, awareness can play a vital role in preventing sunburn and safeguarding skin health. In this sun-drenched region, knowing how to protect yourself from harmful UV rays is essential to enjoy outdoor activities while minimizing the risk of skin damage. Stay informed and take the necessary precautions to embrace the beautiful climate wisely!
The UV Index reveals a dynamic progression throughout the day, beginning with a gentle rise at 07:00 and 08:00 where it remains low at 1. By 09:00, it escalates to 3, but the real intensity hits its peak between 11:00 and 13:00, soaring to a staggering 13 and hitting a maximum of 14 at 13:00. As the sun begins its descent, the index drops gradually, falling to 11 by 15:00, then retreating to 8 at 16:00. As the evening approaches, the UV Index continues its decline, settling at 2 by 18:00 and finally resting at a mere 1 by 19:00. This hourly fluctuation underscores the importance of sun safety during peak hours, particularly between 11:00 and 13:00, when UV exposure is at its highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | 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 | 11 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variations, peaking in the summer months. January starts with a UV Index of 10 (very high), but by February, it rises sharply to 12 (extreme), and continues to escalate until it reaches its maximum in July at 15 (extreme). This elevated threat persists through August, dropping only slightly to 14 in September and back down to 12 in October. The high-risk months for UV exposure are February through September, where the UV Index consistently stays at 12 or above. Residents and visitors are strongly advised to take precautions during these periods, including wearing sunscreen, protective clothing, and limiting sun exposure to avoid skin damage, especially during peak hours when burn time can be as little as 10 minutes. As winter approaches, UV levels decrease, but it's still vital to maintain sun safety practices in November and December, where the UV Index is 10 and 9, respectively.
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 |
| San Isidro Chinantilla | 10 | 12 | 14 | 14 | 14 | 14 | 15 | 13 | 14 | 12 | 10 | 9 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |