Last updated: June 2, 2025
In San Jose de Zaragoza, Mexico, understanding the UV Index is crucial for protecting your skin and health. With a climate belonging to the BWh zone, residents and visitors alike are exposed to varying UV levels throughout the day, peaking at a significant UV Index of 13 around midday. By staying informed about these levels, you can take essential precautions to prevent sunburn and long-term skin damage. As the sun's intensity rises from early morning to the afternoon, being vigilant about UV exposure can make all the difference in enjoying the sunny days while keeping your skin safe and healthy.
The UV index throughout the day reveals a dynamic pattern, starting from a low 0 at 7:00 AM and gradually climbing as the sun rises. By 10:00 AM, it reaches 4, signaling the start of potential sun sensitivity. As noon approaches, the intensity peaks dramatically at 12:00 PM with a UV index of 10, which is considered very high, urging outdoor enthusiasts to take protective measures. The afternoon hours continue to show significant UV levels, with a maximum of 13 at 1:00 PM and 2:00 PM, before slowly tapering off in the later afternoon and evening, dropping back to 1 by 7:00 PM. This data emphasizes the importance of sun safety, especially during the midday hours when UV exposure poses the greatest risk.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
The UV Index experiences significant seasonal fluctuations, with the highest levels occurring from March to October, where it reaches extreme categories (12-14), resulting in a burn time as short as 10 minutes during peak months. February marks the transition to very high levels, peaking at 10, while January and December see lower, yet still concerning levels of 7, categorized as high. For visitors and residents, the high-risk months are clearly from March through October, where it is crucial to take protective measures against UV exposure, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours. As the UV Index declines in November and December, vigilance should remain, particularly in February when transitioning into the peak season. Always be mindful of the UV index when planning outdoor activities!
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| San Jose de Zaragoza | 7 | 10 | 12 | 14 | 14 | 13 | 13 | 13 | 13 | 11 | 8 | 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 |