Last updated: July 2, 2025
In Zhanggezhuang, China, being aware of the UV Index is essential for maintaining optimal skin health and preventing painful sunburns. Understanding the daily variations in UV levels allows residents and visitors to take proactive measures to protect their skin from harmful ultraviolet radiation, especially during peak hours. With a Cwa climate that features warm summers and varied sunlight exposure, the UV Index can soar, reaching a maximum of 11 around noon. This highlights the importance of checking UV levels daily to ensure safe outdoor activities and promote long-term skin wellness.
The UV Index throughout the day showcases a clear pattern of rising and falling intensity. Starting at a mild 2 at 7:00 AM, the levels climb steadily, peaking at 11 by noon—the most intense period of sunlight. As the afternoon progresses, the index remains high, tapering off to 10 at 1:00 PM, before gradually descending. By 3:00 PM, it drops to 5, and the evening settles in with indices of 3 at 4:00 PM, and a gentle decline to 1 by 7:00 PM. This progression highlights the importance of sun protection during peak hours—particularly between 10 AM and 2 PM—when the UV exposure is at its 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 | 10 | very high | 15 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 | 1 | low | 45 min |
Throughout the year, the UV Index displays significant seasonal variations, peaking during the summer months. From January to February, the UV Index remains moderate (3-4), allowing for approximately 30 minutes of safe sun exposure. As we enter March, the risk escalates to high (6), reducing safe burn time to 25 minutes. The months of April through July experience very high (8-10) UV levels, with burn times decreasing to just 15 minutes. Notably, August sees the highest UV Index at 11, categorized as extreme, which calls for extreme caution with a burn time of only 10 minutes. In September, the UV levels decline slightly but remain very high (8), while they further drop to high (6) in October. By November and December, conditions revert to moderate (3-4) with burn times back to 30 minutes. Visitors and residents should exercise caution and consider protective measures, particularly from April to September, when the risk of sunburn and UV exposure is at its highest.
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 |
| Zhanggezhuang | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 11 | 8 | 6 | 4 | 3 |
| 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 |