Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Tres Lomas, Argentina, where the climate fosters sunny days and high UV exposure. As UV levels fluctuate throughout the day, being aware of these changes can significantly aid in sunburn prevention and the overall health of your skin. During peak hours, typically around noon to early afternoon, Tres Lomas experiences elevated UV readings, elevating the risk of skin damage. By monitoring the UV Index, you can take proactive measures to protect yourself and enjoy the beautiful Argentine sunshine safely.
At dawn, the UV Index starts the day at a refreshingly low 0 until 9:00 AM, making it a perfect time for morning strolls without sun concerns. As the clock ticks to 10:00 AM, it creeps up to 1, signaling the sun's gradual strength. By 11:00 AM, the index rises to 2, prompting some caution for those spending time outdoors. The sun reaches its peak intensity at 12:00 PM with a UV Index of 3, and it continues to climb to a maximum of 4 at 1:00 PM—ideal for applying sunscreen! The index then slightly dips to 3 by 2:00 PM and remains steady through 3:00 PM, before tapering off in the late afternoon. By 6:00 PM, it dwindles to 1, finally retreating back to 0 by 7:00 PM, marking the day's end for UV exposure. Be sure to take precautions during those midday hours when the sun is most potent!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 0 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 1 | low | 45 min |
| 11:00 | 2 | low | 45 min |
| 12:00 | 3 | moderate | 30 min |
| 13:00 | 4 | moderate | 30 min |
| 14:00 | 3 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV levels exhibit significant seasonal variations, with January and December experiencing the highest UV Index ratings of 14 in the extreme exposure category, leading to a burn time of just 10 minutes. Notably, February and November also present extreme UV levels at 12 and 13, respectively. The spring months of March (UV Index 10) and October (UV Index 10) fall into the very high category, requiring caution with a burn time of 15 minutes. As we transition into summer, the UV Index decreases to a moderate range of 3 to 5 from June to August, allowing for longer safe exposure times of 30 minutes. However, as fall approaches with a return to high levels in September (UV Index 7) and October, awareness and protection become crucial once again. To ensure safety, visitors and residents should prioritize sun protection during high-risk months, particularly from January to April and in October and November, by seeking shade, wearing protective clothing, and applying sunscreen regularly.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tres Lomas | 14 | 12 | 10 | 7 | 5 | 3 | 4 | 5 | 7 | 10 | 13 | 14 |
| Buenos Aires UVI | 14 | 13 | 11 | 7 | 5 | 4 | 4 | 6 | 8 | 10 | 13 | 14 |
| Rosario UVI | 14 | 13 | 11 | 8 | 5 | 4 | 4 | 6 | 8 | 11 | 13 | 14 |
| Mendoza UVI | 15 | 14 | 12 | 8 | 6 | 4 | 5 | 6 | 9 | 12 | 14 | 15 |
| Cordoba UVI | 15 | 13 | 12 | 9 | 6 | 4 | 5 | 7 | 9 | 12 | 14 | 15 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |