Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Sierra Mojada, Mexico, where the sun shines brightly against a semi-arid backdrop. As this charming town falls within the BWh climate zone, the risk of harmful UV exposure is heightened, particularly during peak hours when the index soars to a staggering 12 at 1:00 PM. By staying informed about UV levels, you can effectively prevent sunburn, protect your skin health, and enjoy the warm, sunny days with confidence. With daily variations ranging from moderate to extreme UV ratings, being aware of the UV Index is key to enjoying all that Sierra Mojada has to offer while keeping your skin safe.
As the sun rises, the UV Index starts its ascent, peaking at a formidable 13 between 1 PM and 2 PM—the perfect reminder to protect your skin from harmful rays. The index climbs steadily from 0 at 7 AM to a moderate 2 by 9 AM, but it reaches a more intense 10 by noon, urging caution. After the midday peak, it gradually declines, dropping to 6 by 5 PM and finally settling at a mellow 2 by 7 PM. Stay vigilant, especially during those peak hours when the sun's strength can be at its most punishing!
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 | 12 | 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 | 2 | low | 45 min |
Throughout the year, UV exposure varies significantly, with the highest risk months occurring from March to September, where the UV Index reaches extreme levels of 11 to 13, resulting in a burn time of just 10 minutes. February and October are categorized as very high exposure months, with burn times of 15 minutes. Visitors and residents should take precautions during these high-risk periods by seeking shade, wearing protective clothing, and using broad-spectrum sunscreen with high SPF. As UV levels decrease in November and December, awareness should still remain, as the index can still be high to very high. Staying informed and proactive can greatly reduce the risk of UV-related health issues.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Sierra Mojada | 7 | 10 | 11 | 13 | 13 | 13 | 13 | 13 | 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 |