Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of Viloco, Bolivia, especially given the region's high-altitude climate that can significantly amplify sun exposure. Being aware of UV levels is essential for preventing sunburn and protecting skin health, as inadequate precautions could lead to long-term damage. In Viloco, typical UV exposure reaches its peak around midday, where values soar to a dangerous 11—indicating a high risk of harm from unprotected sun exposure. With its Cwb climate, the conditions can vary, but the heightened UV intensity makes it imperative to stay informed and take the necessary precautions when enjoying the beautiful outdoors.
The UV Index reveals a dynamic pattern throughout the day, starting at a low 1 in the early morning hours of 07:00 and 08:00. As the sun rises, the index climbs steadily, reaching 3 by 09:00. The midday sun peaks aggressively at 11, with the UV Index hitting its maximum of 11 from 12:00 to 13:00, signaling a high risk for skin damage without protection. Following this peak, values gradually decline, dropping to 9 at 14:00, and tapering down to 6 by 15:00. As the evening approaches, the UV Index falls back to 3 by 16:00 and finally descends to a 1 by 17:00 and 18:00, before sinking to 0 at 19:00, marking the end of the day's UV exposure. It's a reminder to stay vigilant under the sun, especially during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV Index values in the region indicate extreme levels of solar radiation, particularly from January to November, with a notable spike in February at an index of 20. The months of January, February, March, April, July, August, September, October, and November all maintain a consistent and dangerous UV Index, underscoring their classification as high-risk months. Residents and visitors are strongly advised to take precautionary measures during these months to protect their skin, such as applying sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours. Notably, June marks a shift to a very high UV Index of 10, which still requires caution but allows for a slightly increased burn time of 15 minutes. Overall, maintaining awareness of daily UV levels is crucial for outdoor activities year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santa Cruz de la Sierra UVI | 15 | 15 | 14 | 13 | 10 | 8 | 9 | 10 | 12 | 15 | 16 | 16 |
| Sucre UVI | 17 | 17 | 16 | 14 | 11 | 9 | 10 | 12 | 15 | 17 | 17 | 18 |
| Sacaba UVI | 17 | 18 | 17 | 15 | 12 | 10 | 10 | 13 | 15 | 17 | 18 | 19 |
| Cochabamba UVI | 18 | 18 | 17 | 15 | 12 | 10 | 11 | 13 | 16 | 18 | 18 | 19 |
| Viloco | 18 | 20 | 17 | 16 | 13 | 10 | 11 | 13 | 16 | 17 | 19 | 18 |
| Oruro UVI | 19 | 19 | 17 | 16 | 13 | 10 | 11 | 14 | 16 | 19 | 19 | 19 |