Last updated: July 2, 2025
In Cerro Blanco, Mexico, understanding the UV Index is essential for safeguarding your skin health and preventing painful sunburns. With the region's arid climate, locals and visitors alike must be aware of the sharply fluctuating UV levels throughout the day. From a mild peak of 1 at 7 AM to a concerning maximum of 13 around noon, knowing when to seek shade or apply sunscreen can make all the difference in protecting against long-term skin damage. Staying informed about the UV Index not only promotes safe outdoor activities but also fosters a healthier lifestyle in this sun-soaked paradise.
At dawn, the UV Index begins its gentle ascent, peaking at a mild 1 by 07:00. As the sun climbs higher, it rapidly intensifies, reaching a moderate 2 at 08:00 and surging to a substantial 4 by 09:00. The real heat kicks in at 10:00, where the index skyrockets to 7, indicating a high risk of harm from unprotected sun exposure. This trend continues, peaking at an intense 13 at both 12:00 and 13:00, marking the day’s maximum risk. As the afternoon wanes, we see a gradual decline to 10 at 15:00 and further down to 6 by 16:00. By evening, the numbers drop dramatically, settling back to a safe 1 by 18:00 and maintaining that level until nightfall. This hourly progression illustrates the critical importance of sun safety during midday hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 4 | moderate | 30 min |
10:00 | 7 | high | 25 min |
11:00 | 10 | very high | 15 min |
12:00 | 13 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 12 | extreme | 10 min |
15:00 | 10 | very high | 15 min |
16:00 | 6 | high | 25 min |
17:00 | 3 | moderate | 30 min |
18:00 | 1 | low | 45 min |
19:00 | 1 | low | 45 min |
The UV Index experiences significant seasonal variations, peaking from March through October when it reaches extreme levels. The highest values occur in April and May with a UV Index of 14, and the burn time is as short as 10 minutes during these months. January and February are also high-risk months with indices of 8 and 10, respectively, necessitating careful sun protection, as exposure can lead to burns in as little as 15 minutes. From November onward, the index gradually decreases, with burn time extending to 25 minutes in December. Visitors and residents should exercise caution and take protective measures, especially during the spring and summer months, by using sunscreen, wearing protective clothing, and seeking shade when possible.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Cerro Blanco | 8 | 10 | 13 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 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 |