Last updated: July 2, 2025
Understanding the UV Index in San Mateo Penasco, Mexico is essential for safeguarding your skin and overall health. With peak UV levels often hitting a high of 15 during midday, awareness of this index is crucial for preventing sunburn and long-term skin damage. The region's Cwb climate results in varied sun exposure throughout the day, leading to significant UV risks, especially from late morning to early afternoon. Stay informed to enjoy the sunny days while keeping your skin healthy and protected!
The UV Index today began its ascent slowly in the early hours, reaching a modest peak of 1 at both 07:00 and 08:00. However, as the sun climbed higher, the intensity increased dramatically, hitting 3 by 09:00, then surging to 5 at 10:00. The afternoon brought the peak of the day, with the index soaring to an impressive 15 from 13:00 to 14:00—a clear reminder to embrace sun protection during these hours. Following this, the index began to wane, gently dropping back to 9 by 16:00, before tapering off to 5 at 17:00 and subsequently falling to 2 by 18:00 and 1 as night approached. Such fluctuations highlight the importance of staying vigilant about sun exposure, especially during 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 | 9 | very high | 15 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 15 | extreme | 10 min |
| 15:00 | 13 | 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 displays a consistent pattern of extreme levels from January to July, with values peaking at 15 in March through June. This indicates a significant risk for skin damage, with a minimal exposure burn time of just 10 minutes throughout these months. The intensity slightly decreases in August and September to 14, followed by a drop to 13 in October and 11 in November. December shows a further decline to a very high level of 9, allowing for a lengthened burn time of 15 minutes. Visitors and residents are strongly advised to take precautionary measures, particularly during the high-risk months from January to October, by applying broad-spectrum sunscreen, wearing protective clothing, and limiting sun exposure during peak hours to maintain skin health and safety.
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 Mateo Penasco | 11 | 13 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 11 | 9 |