Last updated: August 1, 2025
In Las Piedritas, Mexico, being aware of the UV Index is crucial for safeguarding your skin against harmful sun exposure. Understanding UV levels is essential not just for preventing sunburn but for promoting long-term skin health as well. With a climate that often subjects residents and visitors to high UV exposure, particularly between 10 AM and 2 PM, knowledge becomes your best defense. By monitoring the UV Index, you can make informed choices about sun protection, ensuring that your time spent soaking in the beautiful Mexican sun is both enjoyable and safe.
As the day unfolds, the UV Index reveals a dramatic shift in sun intensity. Early hours, from 07:00 to 09:00, maintain a mild UV Index of 1 to 3, perfect for a leisurely morning stroll. However, the sun climbs higher, and by 10:00, the index spikes to 6, signaling a shift. At 11:00, it reaches 9, and by noon, it peaks at a scorching 11, indicating high risk for unprotected skin. The intensity remains intense at 12:00 and 13:00, with both hours registering a 12—a clear call to seek shade or apply ample sunscreen. As the afternoon unfolds, the UV Index begins to wane, dropping to 9 at 15:00, then tapering down to 4 by 17:00. Finally, as the sun sets, the UV levels lighten to 2 at 18:00 and retreat to 1 by 19:00, marking the end of the day’s sunlit adventure. Stay protected 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 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels fluctuate, peaking during the spring and summer months. January starts with a high UV Index of 7, but by February, it rises significantly to 10, indicating very high risk with a burn time reduced to 15 minutes. The months of March through October consistently exhibit extreme UV conditions, with March and April reaching a peak Index of 13 and a burn time of just 10 minutes. July to September maintain a UV Index of 12, also allowing only 10 minutes for safe sun exposure. As the year progresses, November sees a drop to 8, while December ends with a high UV Index of 6. Visitors and residents are advised to exercise caution, especially from February through October, utilizing protective clothing, sunscreen, and limiting sun exposure during peak hours to minimize skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Las Piedritas | 7 | 10 | 11 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 8 | 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 |