Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Santiago Chilixtlahuaca, Mexico, where the combination of high altitude and a Cwb climate can lead to significant UV exposure. Awareness of UV levels is essential not only for preventing sunburn but also for protecting long-term skin health. With peak UV Index readings soaring to 14 during mid-afternoon hours, outdoor activities, especially between 10:00 AM and 4:00 PM, pose increased risks. By staying informed about UV levels, you can better safeguard yourself and your loved ones from harmful effects of the sun while enjoying Santiago Chilixtlahuaca's vibrant outdoors.
At sunrise, the UV Index begins at a safe 1 at 07:00, indicating low levels of ultraviolet radiation. As the morning progresses, it gradually climbs to 3 by 09:00, making sun protection a good idea as we approach midday. The real intensity arrives around 12:00, when the UV Index skyrockets to 13, peaking at 14 by 13:00 and 14:00—conditions that call for extra caution. After this peak, there's a gradual decrease, dropping to 9 by 16:00 and further down to 5 by 17:00, signaling a return to more manageable levels. As the day winds down, the UV Index falls back to 2 by 18:00, finally resting at a low 1 by 19:00. Always remember to protect your skin 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 | 13 | 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 |
The UV Index exhibits significant seasonal variations, with the highest levels occurring from February to October, where the exposure category is classified as extreme for most of the months. March, April, July, and August have peak UV Index values of 14-15, corresponding to a rapid burn time of just 10 minutes. Consequently, February through October are considered high-risk months for UV exposure, making it essential for visitors and residents to take precautionary measures. It is advisable to wear sunscreen with high SPF, seek shade during peak sun hours, and wear protective clothing to mitigate the risks of overexposure. As November and December approach, the UV levels drop to 10 and 9, respectively, categorizing them as very high, but with longer burn times of 15 minutes. Staying informed and protected year-round is vital for skin health.
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 |
| Santiago Chilixtlahuaca | 10 | 12 | 14 | 15 | 14 | 14 | 15 | 14 | 14 | 12 | 10 | 9 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |