Last updated: July 2, 2025
Staying informed about the UV Index in La Reforma (Kilometro 9) is crucial for safeguarding your skin and overall health. Understanding UV levels can be a game-changer in sunburn prevention and maintaining long-term skin health, especially in this region known for its humid subtropical climate (Cfa), where UV exposure can peak dramatically. With values soaring to 13 during midday, residents and visitors alike must be aware of the risks associated with high UV levels, ensuring they take the necessary precautions to enjoy the sun safely.
As the sun rises, the UV Index starts off low, peaking at 1 between 07:00 and 08:00. However, as the day unfolds, there's a noticeable rise in solar intensity. By 09:00, it climbs to 3, reaching a moderate level of 5 by 10:00. The real surge comes at 11:00, where the UV Index hits 8, signaling stronger rays. This intensity reaches its zenith at 12:00, peaking at an intense 11. For the sun-worshippers, 13:00 and 14:00 are notable highlights, with the index maxing out at 13—the highest of the day—before gradually descending. By late afternoon, the UV levels drop back to 5 by 17:00, and as evening approaches, it dwindles to 1 by 19:00. Stay sun-safe during those peak hours! 🌞
| 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 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure fluctuates significantly, with the highest risk months from March to October when the UV Index consistently reaches extreme levels of 12 to 13. During these months, the recommended burn time reduces to just 10 minutes, posing a serious risk to unprotected skin. Specifically, April through September are critical, as the combination of intense sunlight and low burn time necessitates vigilant sun protection measures. Conversely, the UV Index decreases in the winter months, dropping to 8 in January and 9 in November, giving a bit more reprieve, but still warranting caution. Residents and visitors should take serious precautions during the high-risk months by applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade to minimize harmful UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| La Reforma (Kilometro 9) | 8 | 10 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 11 | 9 | 7 |
| 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 |