Last updated: August 1, 2025
Understanding the UV Index is essential for residents of Zhendu, China, as it plays a pivotal role in protecting skin health and preventing sunburn. This city, characterized by its humid subtropical climate (Cfa), experiences significant UV radiation levels throughout the day. With peak UV Index values soaring as high as 12 around noon, being aware of these fluctuations not only helps individuals enjoy outdoor activities safely but also minimizes long-term skin damage. By familiarizing yourself with daily UV levels, you can take proactive measures to shield yourself and your loved ones from harmful sun exposure in Zhendu's vibrant sun-filled environment.
At dawn, the UV Index starts low at 1 (07:00), but as the sun rises, it climbs steadily. By 09:00, it reaches a moderate 5, signaling an increase in sun exposure. The index spikes dramatically at 10:00, soaring to 9, and peaks at a harsh 12 by 12:00 - making it essential to seek shade and apply sunscreen. The afternoon continues to feel the intensity, with the UV Index remaining high at 12 until 13:00, before gracefully descending to 10 at 14:00. As the sun begins its descent, the index decreases rapidly to 7 (15:00) and further drops to 4 (16:00), with the day winding down to 2 (17:00). By evening, the UV threat fades to a minimal 1 after 18:00. Stay protected during peak hours when the sun is most potent!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | 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 levels of UV exposure, significantly impacting both visitors and residents. The highest UV Index readings occur from May to August, where values reach a peak of 12, categorized as extreme and allowing only a 10-minute burn time. February through April also present high to very high UV levels, with a notable February reading of 8 and April reaching 10. Conversely, November and December offer moderate to high UV exposure, allowing for longer burn times of 25 to 30 minutes. To ensure safety, individuals are advised to take precautions during the high-risk months of May through August, such as wearing protective clothing, applying sunscreen regularly, and seeking shade during peak hours to prevent 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 |
| 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 |
| Zhendu | 6 | 8 | 9 | 10 | 12 | 12 | 12 | 12 | 10 | 9 | 7 | 5 |
| 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 |