Last updated: June 2, 2025
Understanding the UV Index in Pedregal de San Francisco is vital for maintaining skin health and preventing sunburn, especially given its unique climate characterized by high elevation and distinct wet and dry seasons. With UV levels peaking at an alarming 15 around midday, awareness of daily UV exposure can help residents and visitors alike take necessary precautions against harmful effects of the sun. As you navigate the vibrant outdoors, knowing when the UV Index spikes—from moderate levels in the morning to extreme at noon—empowers you to safeguard your skin and enjoy all that this beautiful region has to offer!
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 |
During the year, seasonal UV changes show significant fluctuations, with highest UV levels occurring from February to October. This period includes several high-risk months for sun exposure, particularly from March to October, where the UV Index reaches extreme levels (14-15), with a burn time of just 10 minutes. Conversely, January, November, and December experience very high UV Index ratings (9-10), with longer burn times of 15 minutes. Visitors and residents are strongly advised to take extra precautions during these high-risk months, including wearing protective clothing, applying broad-spectrum sunscreen with an SPF of 30 or higher, and seeking shade during peak hours to minimize the risk of UV-related harm.
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 |
| Pedregal de San Francisco | 9 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 8 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |