Last updated: July 2, 2025
Staying aware of the UV Index is crucial in Justicia Social, Mexico, where sun exposure can significantly impact skin health. Understanding UV levels is vital for preventing sunburn and long-term skin damage, especially during peak hours when the index soars above 12. With a climate that fosters high UV radiation, particularly between 10 AM and 2 PM, residents and visitors alike should be vigilant about sun safety to protect themselves from potential harmful effects. Embracing this awareness not only helps in enjoying the outdoors but also promotes healthier skin for years to come.
The UV Index for the day tells a fascinating story of rising intensity under the sun. Early risers at 07:00 and 08:00 experienced a mild UV Index of 1, perfect for leisurely outdoor activities. As the day progressed, the index climbed steadily, reaching a moderate 3 by 09:00. By 11:00, it surged to 9, marking the start of peak sun exposure. The sun blazed at 12:00, reaching a high of 12, and continued to shine at 13:00 with an impressive 13. Throughout the afternoon, the intensity began to retreat, falling to 12 by 14:00 and gently tapering to 9 at 15:00. By evening, the sun’s grip loosened, with the index dropping to 3 at 17:00 and finally returning to a gentle 1 by 18:00 and 19:00. A day filled with sunshine serves as a reminder to stay protected during those peak hours!
| 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 | 12 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 9 | 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 variations throughout the year, reaching its peak during the spring and summer months. From January to April, the UV levels start at 9 and escalate to 14 by April, indicating an extreme exposure category with a rapid decrease in burn time to just 10 minutes. This high-risk period continues through May to October, where the UV Index remains at 12 to 13, maintaining the extreme classification and a burn time of 10 minutes. In November and December, the UV Index decreases to 9 and 8 respectively, categorized as very high, with burn times extending to 15 minutes. Visitors and residents should take proactive measures, especially from February to October, by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak hours to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Justicia Social | 9 | 11 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 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 |