Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of San Antonio Primera Fraccion, Mexico, where the warm Cwb climate brings not only sunny days but also significant risks of overexposure to ultraviolet rays. Recognizing and acting upon varying UV levels can help prevent painful sunburns and protect long-term skin health. With daily peak UV Index readings soaring as high as 14 during midday hours, it’s vital to stay informed about safe sun practices to enjoy the beauty of your surroundings while safeguarding your skin. Educate yourself on the UV trends in your area, and bask in the sun responsibly!
As the sun rises, the UV Index begins its climb from a gentle 1 at 07:00, nudging upwards to 2 by 09:00. By mid-morning, the intensity escalates to 5 at 10:00, signaling the need for some sun safety. The peak arrives at noon with a sizzling 12, reaching a blistering 14 by 13:00 and 14:00, marking the hours of most intense sun exposure. As afternoon fades, the UV Index gradually recedes to 12 at 15:00, before cooling further to 5 by 17:00, and finally winding down to 1 by 19:00. During the peak hours, make sure to stay protected and enjoy the sunshine responsibly!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 12 | 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 |
During the year, the UV Index shows notable seasonal changes, with highest UV levels occurring from February through October. The months of March, April, May, June, July, August, and September consistently fall within the extreme exposure category, peaking at 15 in April. Visitors and residents should be particularly cautious during these high-risk months, as the burn time is as little as 10 minutes during this period. It is advised to take protective measures, such as wearing sunscreen, protective clothing, and hats, and seeking shade during peak hours to minimize the risk of sunburn. In contrast, November and December see a decrease in UV levels, categorized as very high, with a burn time of 15 minutes, suggesting a slight but essential drop in overall sun exposure risk as the year comes to a close.
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 |
| San Antonio Primera Fraccion | 10 | 11 | 14 | 15 | 14 | 14 | 13 | 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 |