Last updated: July 2, 2025
Awareness of the UV Index is crucial for residents and visitors of San Jeronimo Palantla, Mexico, especially in its warm Aw climate. Understanding UV levels is key to preventing sunburn and maintaining long-term skin health. From the midday peak of UV Index 14—which poses severe risk—knowing when to seek shade or apply sunscreen is vital for safeguarding against harmful rays. As you enjoy the vibrant sun of San Jeronimo Palantla, be mindful of the UV exposure risks to keep your skin healthy and protected year-round.
As the sun rises, the UV Index begins at a moderate level of 0 at 7:00 AM. By 8:00 AM, it climbs to 1, indicating a low risk for sunburn. The intensity increases steadily, reaching 5 by 10:00 AM, where precautions start to become advisable. The peak arrives startlingly at 12 PM, with a significant UV Index of 12, marking a high risk of harm from unprotected sun exposure. From 1 PM to 2 PM, the index remains at its highest, 14, urging outdoor enthusiasts to seek shade or wear protective gear. A gradual decline begins by 3 PM with 13, tapering off to 6 by 5 PM. As the afternoon transitions into evening, the UV Index lowers to 3 at 6 PM, and concludes at a very manageable 1 by 7 PM. This pattern highlights the critical importance of sunscreen and protective clothing during midday outdoor activities.
| 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 | 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 | 13 | 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 Index readings exhibit significant seasonal variation, with the highest levels occurring from March to September where the index consistently reaches 14 and is classified as extreme. January and November present very high indices of 10, with a burn time of 15 minutes, while December features a slightly lower index of 9. Visitors and residents are particularly at risk during the months of February through October, where the burn time drastically shortens to just 10 minutes due to the extreme UV exposure. It is essential for individuals to take proactive measures during these high-risk months by wearing protective clothing, applying sunscreen, and seeking shade to reduce 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 |
| 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 |
| San Jeronimo Palantla | 10 | 12 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 9 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |