Last updated: August 1, 2025
In San Isidro Canoas Altas, Mexico, staying aware of the UV Index is vital for protecting your skin from harmful ultraviolet radiation. Understanding UV levels is essential not only for preventing painful sunburns but also for safeguarding long-term skin health. With a Cfb climate that brings various seasonal changes, sun exposure can be deceptively strong, particularly between 11:00 AM and 3:00 PM, where UV Index values soar to a staggering 15. By recognizing these risks and taking necessary precautions, residents and visitors can enjoy the beautiful outdoors without compromising their well-being.
The UV Index today showcases a dramatic rise, peaking at 15 between 1 PM and 2 PM, indicating a high risk for harm from unprotected sun exposure. Beginning with a low 1 at 7 AM, the index steadily climbs, reaching 10 at 11 AM, before skyrocketing during midday hours. From 12 PM to 2 PM, the index maintains its peak, suggesting it's essential to seek shade and wear protective gear if you’re outdoors. As the afternoon progresses, the intensity gradually decreases, dropping to 2 by 6 PM and returning to a safe 1 by 7 PM. This data highlights the importance of being sun-smart during the critical hours when UV exposure is at its highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | 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 | 12 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | 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 |
Throughout the year, UV Index levels exhibit significant seasonal fluctuations, with high-risk months typically from February to October. During this period, the UV Index peaks at 15, categorized as extreme, particularly from April to July, necessitating vigilant sun safety measures. In these months, the burn time is only 10 minutes, indicating a critical need for protective measures such as sunscreen, hats, and UV-blocking sunglasses. Conversely, November and December see a decrease in UV exposure, categorized as very high, with a lengthened burn time of 15 minutes in those months. Therefore, both visitors and residents are strongly advised to monitor UV levels regularly and take necessary precautions, especially during the warmer, sunnier months to minimize the risk of skin damage.
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 Isidro Canoas Altas | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |