Last updated: August 1, 2025
Awareness of the UV Index is crucial for residents and visitors of San Juan Zitlaltepec, Mexico, as it plays a significant role in protecting skin health and preventing sunburn. Understanding UV levels allows you to take necessary precautions during peak exposure times, notably around midday when the UV Index reaches a maximum of 14, indicating an extreme risk of harm from unprotected sun exposure. Nestled in a Cwb climate zone, San Juan Zitlaltepec experiences a unique combination of elevation and sunlight that can elevate UV levels, laying the groundwork for effective sun safety strategies. Stay informed, stay protected!
The UV Index data reveals a dynamic shift in solar intensity throughout the day. Starting off low at 1 in the early morning at 07:00, it gradually climbs, reaching maximum levels by midday. The peak occurs at 14:00, with a robust reading of 14, signaling the need for sun protection. As the afternoon progresses, values start to decline, dropping to 5 by the late afternoon and 3 by early evening. This pattern underscores the importance of being cautious during peak hours, particularly between 12:00 and 14:00, when UV exposure is at its highest.
| 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 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 11 | 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 |
The UV Index experiences significant seasonal changes, with the highest readings occurring from February to September, where the index reaches extreme levels of 12 to 15. March through October are identified as particularly high-risk months, with the burn time consistently dropping to just 10 minutes, emphasizing the need for protective measures. As summer approaches, residents and visitors are strongly advised to take precautions such as wearing sunscreen, protective clothing, and seeking shade during peak hours to minimize skin damage. Come November and December, the UV Index decreases to 10 and 8 respectively, but caution is still recommended as the exposure remains categorized as very high. Always prioritize sun safety to ensure a healthy experience outdoors.
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 |
| San Juan Zitlaltepec | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 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 |