Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Mariano Matamoros, Mexico, where the sun shines brightly in a typical Aw climate. High UV levels, especially between 10:00 AM and 2:00 PM, can pose significant risks for skin health, increasing the chances of sunburn and long-term damage. By staying informed about UV levels, individuals can take necessary precautions to protect their skin, ensuring a healthier outdoor experience. With peak indices reaching as high as 14, it's vital to be proactive about sun safety in this vibrant region.
During the early morning hours, the UV Index starts off low, peaking at only 1 at both 7:00 and 8:00. As the day progresses, sunlight intensifies, and by 9:00, the index jumps to 4. The sun reaches its zenith from 11:00 to 14:00, where the UV Index soars to a staggering 14 at 13:00, indicating extremely high levels of solar radiation. As afternoon turns to evening, the index gradually declines, dropping to 11 at 15:00, then down to 4 by 17:00 and finally waning to 1 again by 19:00. It's essential to stay protected during those peak hours, particularly between 11:00 and 14:00, when the sun's rays are at their most powerful!
| 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 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure levels vary significantly, with the highest risks occurring from February to October. During these months, the UV Index frequently reaches extreme levels, peaking at 15 in April through July, meaning that a burn can occur in just 10 minutes. It is crucial for visitors and residents to take precautions during these high-risk months, such as seeking shade, wearing protective clothing, and applying sunscreen liberally. Notably, January and November see a slightly lower UV Index of 10, categorized as very high, resulting in a burn time of 15 minutes. The least intense UV levels occur in December with an index of 9, but vigilance is still advised. Overall, awareness and proactive sun protection are essential to prevent harmful effects from UV radiation throughout the year.
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 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |
| Mariano Matamoros | 10 | 13 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |