Last updated: July 2, 2025
In Aquiles Serdan (La Hediondilla), Mexico, being aware of the UV Index is essential for maintaining skin health and preventing painful sunburns. Understanding UV levels can greatly impact your daily activities, especially in this region where the climate tends to be hot and semi-arid (BSh), typically resulting in higher UV exposure risks during midday. With UV Index values peaking at 14 around noon, it's crucial to take precautions to protect your skin from harmful rays. Stay informed and enjoy the sun safely by monitoring the UV Index during your time outdoors!
The UV Index throughout the day tells a compelling story of rising sun intensity. Starting off at a mellow 1 at 07:00 AM, it gradually increases to a moderate 2 by 09:00 AM. As the clock strikes 10:00 AM, the index soars to 5, marking the onset of stronger rays. With the sun at its peak, the index reaches an impressive 11 at 12:00 PM and 14 at 1:00 PM, signaling the highest risk for unprotected skin. Although it remains high at 14 from 1:00 PM to 2:00 PM, it soon begins to dip, falling to 9 by 4:00 PM and further down to 3 at 6:00 PM. As daylight dims, the UV Index retreats to a safe 1 by 7:00 PM, reminding us of the sun's powerful influence during the midday hours. Be sure to protect your skin when the index is at its highest!
| 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 | 8 | very high | 15 min |
| 12:00 | 11 | 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 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels exhibit significant fluctuations, peaking between March and October when the UV Index often reaches extreme levels of 12-14. The highest risk months for UV exposure are April, May, July, and August, with burn times as short as 10 minutes in these months. Visitors and residents are advised to take precautionary measures during these periods, including applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak hours to reduce the risk of skin damage. In contrast, December and January exhibit lower UV levels, although January still maintains a very high category with a burn time of 15 minutes, so it's important to remain vigilant even in the cooler months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aquiles Serdan (La Hediondilla) | 8 | 10 | 12 | 14 | 14 | 13 | 14 | 13 | 13 | 11 | 9 | 7 |
| 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 |