Last updated: June 2, 2025
In Nuevo Graseros, Mexico, being aware of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels can significantly aid in preventing sunburn and long-term skin damage—issues that are especially pertinent in a region known for its hot semi-arid climate (BWh). With UV indices peaking at an alarming 13 around midday, locals and visitors alike must be vigilant about sun safety to enjoy the sunny days without compromising their skin health. Remember, it only takes a few minutes of unprotected exposure during peak hours to incur damage, so staying informed about the UV Index is a vital step towards a healthier lifestyle.
The UV index throughout the day reveals a dynamic pattern, starting from a low 0 at 7:00 AM and gradually climbing as the sun rises. By 10:00 AM, it reaches 4, signaling the start of potential sun sensitivity. As noon approaches, the intensity peaks dramatically at 12:00 PM with a UV index of 10, which is considered very high, urging outdoor enthusiasts to take protective measures. The afternoon hours continue to show significant UV levels, with a maximum of 13 at 1:00 PM and 2:00 PM, before slowly tapering off in the later afternoon and evening, dropping back to 1 by 7:00 PM. This data emphasizes the importance of sun safety, especially during the midday hours when UV exposure poses the greatest risk.
| 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 | 10 | very high | 15 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 13 | 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 |
The UV Index experiences significant seasonal fluctuations, with the highest levels occurring from March to October, where it reaches extreme categories (12-14), resulting in a burn time as short as 10 minutes during peak months. February marks the transition to very high levels, peaking at 10, while January and December see lower, yet still concerning levels of 7, categorized as high. For visitors and residents, the high-risk months are clearly from March through October, where it is crucial to take protective measures against UV exposure, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours. As the UV Index declines in November and December, vigilance should remain, particularly in February when transitioning into the peak season. Always be mindful of the UV index when planning outdoor activities!
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nuevo Graseros | 7 | 10 | 12 | 14 | 14 | 13 | 13 | 13 | 13 | 11 | 8 | 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 |