Last updated: July 2, 2025
Understanding the UV Index is essential for residents and visitors of Lomas de Vallejos, Argentina, where the Cfa climate brings warm summers and moderate UV exposure risks. With UV levels peaking around midday, awareness of these fluctuations is vital for sunburn prevention and maintaining skin health. By keeping an eye on the UV Index, you can enjoy the beautiful sunny days in this picturesque locale while safeguarding your skin from potential harm. Plan your activities accordingly, knowing that between 11 AM and 2 PM the UV Index can soar to levels 5 and 6, necessitating extra precautions to ensure your sun-soaked adventures remain safe and enjoyable.
The UV Index today shows a clear peak in intensity, reaching its maximum at 1 PM with a UV Index of 6—a signal for sun safety awareness. As the day unfolds, the index begins at 0 at 7 AM, slowly rising to 1 by 8 AM, then climbing steadily until it hits 5 at noon. After 1 PM, there's a gradual decline, dropping back to 4 at 3 PM, then tapering off to 1 by 5 PM and ultimately returning to 0 by 7 PM. This hourly trend suggests that the hours between 11 AM and 2 PM are crucial for protection from harmful UV rays; it's advisable to seek shade, wear protective clothing, and apply sunscreen during these peak hours. Stay safe and shield yourself!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 2 | low | 45 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 4 | 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 |
The UV Index experiences significant fluctuations throughout the year, with extreme values observed from January to March, reaching as high as 14, indicating a burn time of just 10 minutes. As temperatures rise, April marks a transition to very high UV levels (10) with a burn time of 15 minutes, followed by a decrease to high levels in both May (6) and July (6), allowing for longer exposure times of 25 minutes. Notably, September sees a return to very high UV levels at 10, while October and November revert to extreme levels of 14, emphasizing the ongoing risk as the year closes out. Visitors and residents should remain vigilant, particularly during the high-risk months of January through March, April, September, October, and November. To minimize the risk of UV-related harm, it is advisable to seek shade, wear protective clothing, and apply sunscreen during peak exposure times, especially in the extreme and very high categories.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Lomas de Vallejos | 14 | 14 | 13 | 10 | 6 | 5 | 6 | 7 | 10 | 13 | 14 | 14 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |