Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Chongos Alto, Peru, where the high-altitude climate contributes to significantly increased exposure to harmful ultraviolet rays. Awareness of UV levels is essential for preventing sunburn and protecting skin health, particularly during peak hours when the index soars. With typical UV levels peaking at 12 around midday, it’s vital to be informed about these fluctuations to safeguard against skin damage and enjoy the sun safely. Whether you're exploring the stunning landscapes or enjoying outdoor activities in this ET climate zone, being mindful of the UV Index can make all the difference in protecting your skin while soaking up the beauty of Chongos Alto.
As the day unfolds, the UV Index begins to rise steadily, peaking at 12 around noon, indicating a high risk of harm from unprotected sun exposure. Starting from a mild 1 at 07:00, it climbs to 2 by 08:00, then surges to a significant 9 by 10:00. The intensity continues to escalate, reaching its maximum at 11 by 11:00, just before noon. After a slight dip to 8 by 14:00, the UV Index begins its gradual decline, dropping to 2 by 16:00, and finally resting at 0 by 18:00—a clear indication that the sun's rays are no longer a concern. To protect your skin, it's crucial to seek shade and apply sunscreen during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV index levels in this region remain alarmingly high, with a consistent range of 18 to 20, indicating extreme exposure risk. The highest-risk months for UV exposure are January through April, where the UV Index caps at 20 in January and remains above 18 through April, necessitating extreme caution during outdoor activities. Although the UV Index slightly decreases during the summer months of June and July, it remains critically high, fluctuating between 12 and 15. Visitors and residents are strongly advised to take protective measures year-round, including wearing sunscreen, protective clothing, and sunglasses, and to limit sun exposure during peak hours, particularly between 10 AM and 4 PM. Always prioritize skin safety to prevent harmful effects of prolonged UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Callao UVI | 14 | 14 | 14 | 12 | 10 | 9 | 10 | 11 | 12 | 13 | 14 | 13 |
| Lima UVI | 14 | 14 | 14 | 12 | 10 | 9 | 10 | 11 | 12 | 13 | 14 | 13 |
| Trujillo UVI | 15 | 15 | 15 | 14 | 12 | 11 | 11 | 11 | 13 | 14 | 14 | 14 |
| Chiclayo UVI | 14 | 15 | 15 | 14 | 13 | 11 | 11 | 12 | 15 | 14 | 14 | 13 |
| Arequipa UVI | 18 | 17 | 17 | 15 | 12 | 10 | 11 | 13 | 15 | 17 | 18 | 17 |
| Chongos Alto | 20 | 19 | 19 | 18 | 15 | 12 | 14 | 15 | 17 | 18 | 19 | 18 |