Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Chapultepec, Mexico, where the sun’s rays can be particularly intense. Awareness of UV levels is essential not only for preventing painful sunburns but also for protecting long-term skin health. With Chapultepec’s Af climate, where sunny days are prevalent, it's important to recognize the peak UV times—particularly between 10 AM and 2 PM, when the index can soar to 12 and 13, signaling extreme exposure risks. By keeping an eye on the UV Index, you can make informed decisions about sun safety, ensuring that your time outdoors remains enjoyable and safe.
As the sun rises on this bright day, the UV Index starts off relatively low, peaking at just 1 at both 7:00 AM and 8:00 AM. However, by 9:00 AM, it jumps to 3, signaling an increase in UV exposure. The intensity escalates quickly, reaching a notable 6 by 10:00 AM. The real intensity hits its peak at 12:00 PM, when the UV Index soars to a striking 12, followed closely by a high of 13 at 1:00 PM. Over the next few hours, the index gradually diminishes, but still remains significant with 10 at 3:00 PM and 7 by 4:00 PM. As evening approaches, the levels continue to decline, returning to 1 once dusk settles in at 7:00 PM. Be sure to protect your skin!
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 | 12 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 12 | extreme | 10 min |
15:00 | 10 | very high | 15 min |
16:00 | 7 | high | 25 min |
17:00 | 4 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 1 | low | 45 min |
During the year, the UV Index exhibits significant seasonal variation, peaking from March through September with consistently high levels categorized as extreme (UV Index 11-13) and a burn time of only 10 minutes. The highest-risk months are February to April and June to September, when the UV Index reaches its maximum of 13. Visitors and residents are strongly advised to take proper precautions during these months, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade when outdoors to minimize the risk of sunburn and long-term skin damage. In contrast, January, November, and December experience a slight decrease in UV exposure, yet caution should still be exercised as the UV Index remains in the very high range.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chapultepec | 9 | 11 | 13 | 13 | 12 | 13 | 13 | 12 | 13 | 11 | 9 | 8 |
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 |