Last updated: August 1, 2025
In Ejido la Arrocera, Mexico, understanding the UV Index is essential for safeguarding your skin and overall health. The UV Index indicates the strength of ultraviolet radiation on a given day, highlighting the importance of taking protective measures to prevent sunburn and long-term skin damage. With a climate characterized by high sun exposure, particularly during peak hours from 10 AM to 2 PM, the UV Index often reaches alarming levels—peaking at 12. By staying informed about daily UV levels, residents and visitors can enjoy the sun safely while minimizing health risks associated with prolonged exposure.
From 7:00 AM to 8:00 AM, the UV Index remains low at 1, providing a gentle start to the day. However, as the sun climbs higher, the intensity picks up significantly. By 9:00 AM, it reaches a moderate 3, and by 10:00 AM, it has surged to 6, signaling the need for sun protection. The peak occurs between 12:00 PM and 1:00 PM, with the UV Index hitting a blistering 12, the highest reading of the day. After this zenith, there’s a gradual decline; it drops to 9 by 3:00 PM, and by 6:00 PM, it falls to 2 as the sun begins to set. As the day winds down, UV levels decrease back to 1 by 7:00 PM. This data highlights the critical hours for sun exposure, emphasizing the importance of protective measures during the midday peak.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal UV exposure varies significantly, with the highest risk occurring from March to September when the UV Index consistently remains in the extreme category (11-12). During these months, the burn time is notably short, at just 10 minutes, meaning that protective measures are crucial. February also marks a high-risk month with a very high UV Index of 9 and a burn time of 15 minutes. As the seasons change, UV exposure decreases, with October and November presenting very high conditions (8-10) but longer burn times of 15 minutes. By December and January, the UV Index falls to 6-7 and the burn time increases to 25 minutes. Visitors and residents should take precautions, such as wearing sunscreen and protective clothing, especially during the high-risk months to prevent harmful UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ejido la Arrocera | 7 | 9 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 10 | 8 | 6 |
| 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 |