Last updated: August 1, 2025
Understanding the UV Index in Santa Teresa de la Una, Mexico is crucial for maintaining skin health and preventing sunburn. As a region characterized by a BWh climate, the sun can amplify UV radiation levels, particularly during peak hours. With UV Index levels soaring to a maximum of 13 at midday, awareness of these fluctuations is essential to ensure you protect yourself effectively. By staying informed about UV exposure risks, you can enjoy the beautiful sunshine while safeguarding your skin from potential harm.
The UV Index on this particular day exhibits a clear ascent as the sun rises, starting at a low 0 at 7:00 AM and gradually increasing to a moderate 1 by 8:00 AM. The intensity intensifies significantly through the morning, peaking at 11 by noon. The highest level, an impressive 13, is reached during the afternoon hours at both 1:00 and 2:00 PM, indicating a critical time for sun exposure. As the day progresses, the index begins to taper off, dropping to 10 by 4:00 PM, and continuing downwards to 2 by 7:00 PM. This data underscores the importance of sun protection during peak hours, especially between 11:00 AM and 2:00 PM, when UV radiation reaches its most potent levels. Always remember to stay safe and shield yourself from those UV rays!
| 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 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 13 | 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 |
The UV Index experiences significant seasonal changes, peaking from March to October when it reaches extreme levels (12-14), necessitating careful attention to sun exposure. February marks the transition into the very high exposure category, while January and December see a lower risk in the high exposure zone. The months of March through October, particularly April, May, June, July, August, September, and October, represent high-risk periods where a burn can occur in just 10 minutes. Residents and visitors should take precautions during these months, including wearing protective clothing, using sunscreen with a high SPF, and seeking shade during peak hours. In November, the UV Index drops to a very high level, with a burn time of 15 minutes, reminding us to remain vigilant as the seasons transition. Regularly monitoring UV levels is essential for maintaining skin health throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santa Teresa de la Una | 7 | 10 | 12 | 14 | 14 | 13 | 13 | 13 | 13 | 11 | 9 | 7 |
| 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 |