Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of Los Haros, Mexico, where the combination of its BSk climate and high altitude can lead to significantly elevated UV levels. With the UV Index reaching a maximum of 14 during the hottest hours, awareness of this measure is essential for preventing sunburn and protecting your skin health. By recognizing when UV levels are at their peak—especially between 11 AM and 2 PM—you can take proactive steps to shield yourself from harmful rays. In Los Haros, the sunny days may beckon, but understanding and monitoring UV exposure can help you enjoy the outdoors safely.
As the sun rises, the UV Index remains at a refreshing 0 at 7:00 AM, gradually climbing to a mild 1 by 8:00 AM. By 9:00 AM, it reaches 2, hinting at the day’s increasing brightness. The heat truly begins to set in by 10:00 AM, where it spikes to a 5, and by 11:00 AM, it surges to 8. The peak of the day arrives at 12:00 PM with a high of 11, followed closely by an intense 14 that lasts from 1:00 PM to 2:00 PM. A slight decline begins at 3:00 PM, dropping to 13, then tapering off to 10 by 4:00 PM. As evening approaches, the index gently falls to 7 at 5:00 PM, before dwindling to a gentle 3 at 6:00 PM, and finally settling at a serene 1 as the day fades into night. A perfect reminder to stay protected from the sun’s rays during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 13 | extreme | 10 min |
| 16:00 | 10 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
The UV Index demonstrates significant seasonal changes, peaking during the late spring and summer months. From January to March, the index starts high but quickly escalates, reaching its maximum of 15 in both April and May. The months of February to October pose the highest risk, with an extreme exposure category, where the burn time is notably short at 10 minutes. Visitors and residents should be particularly vigilant during these high-risk months, especially from February to October, and adopt protective measures such as wearing sunscreen, hats, and protective clothing. As we approach the fall and winter months, the UV risk decreases but remains notably high in November and December. It is essential to stay informed and protect your skin year-round.
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 |
| Los Haros | 9 | 11 | 14 | 15 | 15 | 14 | 14 | 14 | 14 | 12 | 10 | 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 |