Last updated: July 2, 2025
In El Arroyo Colorado, Mexico, understanding the UV Index is essential for protecting your skin and overall health. With a tropical climate characterized by intense sunlight, awareness of UV levels can help prevent sunburn and reduce the risk of long-term skin damage. During peak hours—from 10 AM to 4 PM—the UV Index can soar to dangerous levels, reaching up to 14, making it vital for residents and visitors to take precautions. By staying informed about UV exposure risks, you can enjoy the beautiful weather while keeping your skin safe from harm.
The UV Index data paints a vivid picture of the sun’s intensity as the day unfolds. Starting at 07:00, the index is at a safe 0, but by 08:00, it nudges up to 1, indicating a slight increase in UV exposure. As the clock strikes 10:00, things heat up — the index climbs to 4, urging early risers to take precaution. The real peak occurs during the midday hours, where 12:00 sees a blistering 10, escalating to an impressive 13 by 13:00. It reaches its zenith at 14:00 with a staggering 14, representing a critical point for sun safety. The afternoon brings a gradual decline, stretching from 12 at 15:00 down to 3 by 18:00, before settling at 1 as the sun sets at 19:00. This data underscores the importance of sun protection, especially during those peak hours!
| 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 | 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, the UV Index demonstrates significant seasonal fluctuations, with the highest values occurring during the summer and early fall months. Notably, from February to October, the UV index remains in the extreme category, peaking at 14 in April, June, July, and September. This period constitutes the high-risk months, where burn times are alarmingly short, limited to just 10 minutes. Conversely, January, November, and December see lower UV ratings classified as very high, with slightly longer burn times of 15 minutes. To ensure safety, visitors and residents are advised to take precautions during the high-risk months by wearing protective clothing, applying sunscreen, and seeking shade, especially during midday hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| El Arroyo Colorado | 9 | 11 | 13 | 14 | 13 | 14 | 14 | 13 | 14 | 11 | 9 | 8 |
| 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 |