Last updated: June 2, 2025
Understanding the UV Index in Santiago Coltzingo, Mexico is crucial for protecting your skin and overall health. The UV Index provides valuable insights into the intensity of ultraviolet radiation from the sun, helping residents and visitors alike make informed decisions about sun exposure. High UV levels—particularly around midday when values peak at 15—significantly increase the risk of sunburn, which can lead to skin health issues over time. Given Santiago Coltzingo's Cwb climate, known for its distinct wet and dry seasons, awareness of daily UV fluctuations is essential to enjoy the beautiful outdoors safely. Don’t let the sun catch you off guard; stay informed and protect your skin!
The UV Index throughout the day showcases a significant rise in solar radiation, reaching its peak during the midday hours. Starting off the day at a comfortable level of 1 around 07:00 and 08:00, the index climbs steadily. By 09:00, it hits 3, but it’s from 10:00 onwards that the intensity becomes notable, jumping to 6. The 11:00 mark signals a surge to 10, and by 12:00, it reaches 13—indicative of strong UV exposure. The highest point occurs at 13:00 and 14:00, where it peaks at an intense 15, urging caution for outdoor enthusiasts. As the afternoon progresses, the index begins to decline, dropping to 12 by 15:00, 9 at 16:00, and continuing to decrease until it settles back at 1 by 19:00. This variation underscores the importance of sun safety, particularly during the midday hours when UV levels can be most harmful. Take care and protect yourself when the sun is at its strongest!
| 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 | 10 | very high | 15 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 15 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 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 |
| Santiago Coltzingo | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |