Last updated: July 2, 2025
In Riachuelo, Argentina, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. Elevated UV levels, particularly during midday hours, pose significant risks, making it essential for residents and visitors to stay informed. With a Cfa climate characterized by hot summers and mild winters, Riachuelo experiences frequent exposure to intense sunlight, especially between 10 AM and 2 PM when UV levels can reach as high as 6. Understanding these fluctuations empowers the community to take proactive measures such as wearing sunscreen and protective clothing, ensuring a safer and healthier outdoor experience.
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 |
Throughout the year, seasonal UV changes showcase distinct patterns, with the highest UV indexes occurring in the winter months and early spring. Specifically, January, February, and November exhibit an extreme UV Index of 14, necessitating only 10 minutes of exposure before potential sunburn. March follows closely with an Index of 12, while April presents a very high 10, increasing burn time to 15 minutes. May sees a drop to 7 (high), and June to 5 (moderate), before climbing back to high levels in July and August with indexes of 6 and 7, respectively. As summer wraps up, September returns to a very high 10, and October hits back to extreme at 13, again limiting safe exposure to just 10 minutes. Notably, the high-risk months are thus January, February, March, October, November, and December, all marked by extreme UV radiation. Consequently, it's crucial for visitors and residents to prioritize sun protection during these months, including wearing sunscreen, protective clothing, and seeking shade to minimize the risk of UV-related harm.
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 |
| Riachuelo | 14 | 14 | 12 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 14 | 14 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |