Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of San Isidro el Zapotal, Mexico, a region known for its mild and temperate climate. With UV levels peaking significantly during midday—reaching as high as 14—awareness of these values can play a vital role in preventing sunburn and ensuring skin health. By monitoring the UV Index, you can better protect yourself from the harmful effects of the sun, particularly during the warmer hours when exposure risks are greatest. Stay informed and safeguard your skin while enjoying the beautiful surroundings of San Isidro el Zapotal!
At dawn, the UV Index begins its day at a gentle 1, providing a safe start for early risers. As the sun climbs higher, 09:00 marks the emergence of a more moderate 4, gradually prepping the skin for what's to come. By 10:00, the intensity peaks significantly to 7, prompting a reminder for sun protection. The true zenith occurs around 12:00 when the index reaches a blazing 13, peaking further at 13:00 with an intense 14. As the afternoon unravels, the index starts to wane—by 15:00 it’s down to 10, and later drops to 7 by 16:00. As the day transitions into evening, the UV levels ease back down to 1 by 18:00, granting a soothing conclusion to a sun-soaked day. Always remember to protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | 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 | 14 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index demonstrates significant seasonal variability, with peak levels occurring from February to October, where an extreme rating (UV Index 12-14) is prevalent for most months. January and November feature a very high exposure category, while December sees a slight decrease. March through October are particularly concerning, as these months also have the shortest burn time of only 10 minutes. Visitors and residents should exercise caution during these high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during peak sunlight hours to minimize the risk of UV-related skin damage. Remember, even on cloudy days, UV rays can still cause harm, so stay vigilant year-round.
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 |
| San Isidro el Zapotal | 10 | 12 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 10 | 9 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |