Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Rengang, China, where exposure to ultraviolet radiation can significantly impact skin health. With peak UV levels reaching as high as 11 in midday hours, awareness of these fluctuations is vital for sunburn prevention and long-term skin protection. Given Rengang's humid subtropical climate, the risk of harmful UV exposure is often underestimated, making it essential for locals to monitor UV levels daily. By staying informed, you can enjoy the sun safely while safeguarding your skin against potential damage.
The UV Index data reveals an intriguing daily pattern in sun exposure. Starting the day at a modest 2 at 7:00 AM, the index climbs steadily, peaking during the late morning to early afternoon. At 11:00 AM and 12:00 PM, it reaches an intense 11, signaling a high risk of harm from unprotected sun exposure. As the sun begins its descent, the index gradually decreases, dropping to 8 by 2:00 PM and further down to 5 at 3:00 PM. By 6:00 PM, the UV Index falls to a gentle 1, and by 7:00 PM, it tapers off completely, hitting 0. This data underscores the importance of sun safety during peak hours, particularly between 10:00 AM and 2:00 PM, when the UV levels are at their highest.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 6 | high | 25 min |
10:00 | 9 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 11 | extreme | 10 min |
13:00 | 10 | very high | 15 min |
14:00 | 8 | very high | 15 min |
15:00 | 5 | moderate | 30 min |
16:00 | 3 | moderate | 30 min |
17:00 | 2 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal changes, with the most intense exposure occurring in the summer months. From June to August, the UV Index reaches an extreme level of 11, necessitating a burn time of just 10 minutes for unprotected skin. The spring months of March to May also present very high levels of UV radiation, with values peaking at 10, allowing only 15 minutes of exposure before risking sunburn. Conversely, the winter months of January and December show a moderate UV Index of 4, with a safer burn time of 30 minutes. **Visitors and residents are advised to take extra precautions from February to October, especially during the peak summer months when UV exposure poses the highest risks. It is essential to use sun protection measures such as sunscreen, clothing, and shade to minimize harmful effects on the skin.
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 |
Rengang | 4 | 6 | 8 | 10 | 10 | 11 | 11 | 11 | 10 | 8 | 6 | 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 |