Last updated: June 2, 2025
Understanding the UV Index in San Marcos Zacatepec, Mexico, is essential for safeguarding your skin against harmful solar radiation. With elevated UV levels, particularly between 11 AM and 2 PM, awareness helps prevent sunburn and long-term skin damage. The region's Cwb climate fosters a unique blend of sun exposure, making it crucial for residents and visitors alike to stay informed about UV risks. By tracking daily UV Index fluctuations, you can enjoy the beautiful outdoors while protecting your skin’s health—an important aspect of living in this vibrant and sun-kissed locale.
Throughout the day, the UV Index displays a striking ascent, peaking at an impressive 14 between 1:00 PM and 2:00 PM. Starting from a low of 1 at 7:00 AM and 8:00 AM, the intensity gradually rises, reaching a moderate 3 by 9:00 AM. As the sun climbs higher, the index skyrockets, hitting 9 at 11:00 AM, and then ascending to its apex of 13 just before noon. By 1:00 PM, with the sun fully overhead, it maxes out at 14, before a gradual decline sets in. The afternoon sees a decrease to 12 by 3:00 PM, then slipping to 5 by 5:00 PM. As the day winds down, the UV Index returns to a manageable 2 by 6:00 PM, finally settling back at 1 by 7:00 PM. This variation highlights the importance of sun safety as midday approaches!
| 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 | 13 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | 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 Index levels exhibit significant variability, peaking during the spring and summer months. The highest risks of UV exposure occur from February to October, with the most extreme values ranging from 14 to 15. Specifically, March to May and June to October present *critical threats, with a consistent burn time of just 10 minutes. As such, visitors and residents are advised to take precautionary measures during these high-index months. This includes wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sunlight hours. Conversely, November and December see lower UV levels, classified as very high, with burn times extending to 15 minutes, but caution is still warranted.
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 Marcos Zacatepec | 10 | 13 | 14 | 15 | 15 | 14 | 14 | 14 | 14 | 12 | 10 | 9 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |