Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Danjiangkou, China, where exposure to harmful ultraviolet radiation can significantly impact skin health. With peak UV levels reaching a high of 10 during midday, awareness of these fluctuations can help prevent sunburn and long-term skin damage. This region experiences a Cfa climate, characterized by hot summers, making it essential for residents to stay informed about UV risks associated with their daily outdoor activities. By monitoring the UV Index, you can take proactive steps to protect your skin and enjoy the sunny days in Danjiangkou safely.
The UV Index throughout the day exhibits a dynamic rise and fall, revealing important insights for sun safety. Starting from a low of 1 at 07:00, the index gradually climbs to reach its peak at 12:00 with a high of 10, indicating a significant risk of harm from unprotected sun exposure. The afternoon sees a slight decrease, dipping from 9 at 11:00 to 7 by 15:00. As the sun begins to set, the UV levels drop back down to 2 by 17:00 and return to a gentle 1 as evening falls. This data underscores the importance of early-day sun protection, especially during midday when UV radiation is at its strongest.
| 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the UV Index levels, which dictate the intensity of sun exposure. January and February start with a moderate UV Index of 5, allowing for a burn time of 30 minutes. However, as we move into March, the index rises to 7 (high), reducing burn time to 25 minutes. April marks a significant jump to a very high UV Index of 9, with a burn time dropping to just 15 minutes. The peak UV exposure occurs in May and July at an extreme level of 11, where burn time is cut to only 10 minutes. June and August follow closely with a very high index at 10. Autumn months see a decline; September has a UV Index of 10, falling to 8 in October. By November, the index returns to a moderate level of 5, and in December, it decreases slightly to 4. Visitors and residents should take extra precautions during the high-risk months of March to October, particularly in May and July, by wearing protective clothing, applying sunscreen regularly, and seeking shade during peak sun hours to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beijing UVI | 2 | 3 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 6 | 4 | 2 |
| Danjiangkou | 5 | 5 | 7 | 9 | 11 | 10 | 11 | 10 | 10 | 8 | 5 | 4 |
| Chengdu UVI | 5 | 6 | 8 | 10 | 12 | 11 | 11 | 10 | 11 | 8 | 6 | 4 |
| Shanghai UVI | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
| Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |