Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of San Isidro el Tanque, Mexico, where the sunny climate can pose significant risks to skin health. With UV levels reaching a peak of 14 during the day, awareness of these numbers helps in preventing sunburn and long-term skin damage. Given the region's BSk climate, characterized by warm and dry conditions, it's essential to regularly check UV exposure risks—especially in peak hours from 11 AM to 3 PM—to keep yourself safe and enjoy the beautiful outdoors without compromising your health. Stay informed, protect your skin, and embrace the sun-smart lifestyle that this vibrant place offers!
As the sun rises, the UV Index remains low at 1 from 7:00 AM to 8:00 AM, providing a gentle start to the day. However, by 9:00 AM, the intensity climbs to 3, prompting early risers to pay some attention to sun exposure. The real heat kicks in by 10:00 AM, hitting 6, and by 11:00 AM, it peaks at a staggering 9. The afternoon brings the highest UV risk, soaring to an eye-watering 14 at 1:00 PM and 2:00 PM, demanding vigilant sun protection. As the day winds down, the index starts to taper off, dropping to 6 by 5:00 PM and gradually falling to 1 by 7:00 PM. Always keep in mind to enjoy the sun safely 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 | 14 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV index levels exhibit significant seasonal variation, peaking between March and July, where values reach an extreme level of 14 to 15. The months of February to October are particularly high-risk for UV exposure, with March, April, May, July, and August consistently maintaining an index of 14 to 15, demanding only 10 minutes of sun exposure before burn occurs. Conversely, December and January show a decrease in UV levels, categorized as very high, with longer burn times of 15 minutes. Visitors and residents should take precautions during the high-risk months by seeking shade, wearing protective clothing, and applying sunscreen to minimize skin damage from UV radiation.
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 |
| San Isidro el Tanque | 9 | 11 | 14 | 14 | 15 | 14 | 15 | 14 | 14 | 12 | 10 | 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 |