Last updated: June 2, 2025
In San Dionisio Ocotlán, Mexico, being aware of the UV Index is crucial for safeguarding your skin health. Understanding the levels of ultraviolet radiation can help you prevent painful sunburns and reduce the risk of long-term skin damage. With a Cwb climate characterized by varied weather, local residents face specific UV exposure risks, particularly during peak hours when the index can soar to 15 around midday. By staying informed about UV levels, you can enjoy the outdoors while still protecting your skin from harmful effects.
The UV Index paints a vivid picture of the sun's intensity throughout the day, peaking dramatically by noon. Starting gently at 1 at 07:00, the index gradually rises, reaching 6 by 10:00. As the clock strikes 11:00, the UV intensity escalates to a robust 10, signaling the need for sun protection. The highest levels occur from 12:00 to 13:00, with a blistering maximum of 15 at 13:00. After this midday zenith, the index begins its descent, dropping to 14 at 14:00 and further declining to 12 by 15:00. As evening approaches, the UV levels soften, falling to 2 by 18:00 and finally settling back to 1 as the sun sets at 19:00. This data underscores the importance of vigilance during the peak hours to ensure skin safety in the sun.
| 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 | 10 | very high | 15 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variation, peaking from March to October when it reaches the extreme category of 15 during most months. The highest risk months are from February to July, where the UV Index consistently remains above 13, with a particularly concerning reading of 15 in March through July. Visitors and residents should exercise caution during these months, limiting sun exposure to 10 minutes or less and utilizing protective measures such as broad-spectrum sunscreen, hats, and sunglasses. As autumn approaches, UV levels gradually decrease, with December and January offering some relief, but even then, a UV Index of 10 indicates that caution is still advised. Stay informed and prioritize sun safety to minimize health risks throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| San Dionisio Ocotlan | 10 | 13 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 11 | 9 |