Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of San Isidro Gallinero (El Gallinero), Mexico, where the sun can be a relentless companion. With peak UV levels reaching a staggering 14 during midday, awareness of UV exposure is essential for sunburn prevention and maintaining skin health. The region's Aw climate tends to offer abundant sunlight year-round, which increases the risk of skin damage if proper precautions aren't taken. Being informed about UV levels helps you plan your outdoor activities effectively, ensuring you enjoy the beauty of El Gallinero while protecting your skin from harmful rays.
The UV Index for the day reveals a clear pattern of increasing intensity as the sun climbs higher in the sky. Starting from a safe 0 at 07:00, the index gently rises to 1 at 08:00 and then to 2 by 09:00. However, as midday approaches, the readings spike dramatically, peaking at an intense 14 at 14:00. This midday heat marks the highest risk for sun exposure, with a staggering 11 seen at 12:00 and 13 at 13:00. The afternoon brings a gradual decline, with the UV Index dropping to 9 at 16:00 and continuing to decrease to 2 by 18:00. As the day transitions into evening, the risk subsides, settling at 1 by 19:00. This data underscores the importance of sun safety during peak hours, particularly between 11:00 and 15:00.
| 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 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 13 | 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 |
The seasonal UV changes reveal that the months from February to October are particularly concerning, as most months in this period have an extreme UV Index, peaking at 14 in March, May, June, July, and September. The high-risk months for sun exposure are therefore from February through October, where the recommended burn time is only 10 minutes. In contrast, January, November, and December are slightly less critical with very high UV Index levels of 10 and 9, allowing for burn times of 15 minutes. Visitors and residents should take precautionary measures during these months by seeking shade, wearing protective clothing, and applying sunscreen frequently 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 |
| San Isidro Gallinero (El Gallinero) | 10 | 11 | 14 | 13 | 14 | 14 | 14 | 13 | 14 | 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 |