Last updated: August 1, 2025
Understanding the UV Index is crucial for the residents and visitors of Ignacio Bastida (Santa Catarina Tlayca) in Mexico, where the sun shines brightly, especially during peak hours. With UV levels reaching a maximum of 14 by midday, awareness and education about these readings play a vital role in preventing sunburn and preserving skin health. In this warm, Aw climate region, the risks associated with UV exposure can escalate quickly, making it essential to stay informed about daily fluctuations in UV levels and take appropriate precautions to enjoy the sun safely.
As the sun rises, the UV Index begins to climb gradually. Starting at a low 1 at 07:00 and 08:00, it remains manageable until 09:00, when it reaches 2. However, the intensity sharply escalates as the sun ascends, peaking at a staggering 14 by 14:00—the time to take extra precautions! The afternoon sun is ruthless, with UV levels soaring to an extreme 13 at 13:00 and settling back to 12 by 15:00. As the day winds down, the UV Index dips to a more forgiving 2 by 18:00, finally returning to 1 as dusk approaches. Don't forget your sunscreen during those peak hours!
| 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 | 12 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | 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, UV Index levels exhibit significant seasonal variations, with the highest risk months occurring from February to October. During these months, particularly from March to October, the UV Index reaches extreme levels (up to 15), meaning that unprotected skin can burn in just 10 minutes. Additionally, January and November have very high UV levels, where the burn time increases to 15 minutes. Visitors and residents are strongly advised to take preventive measures, such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sunlight hours, especially when the UV Index is at its highest. Keeping these precautions in mind will help ensure a safer experience when 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 |
| Ignacio Bastida (Santa Catarina Tlayca) | 10 | 12 | 14 | 15 | 14 | 14 | 14 | 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 |