Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Shengli, China, where the risk of harmful solar radiation varies throughout the day. Awareness of UV levels not only helps prevent painful sunburns but also plays a vital role in maintaining long-term skin health. With a BSk climate characterized by dry and sunny conditions, Shengli experiences significant UV exposure, peaking with an index of 11 between noon and 1 PM, signaling a high risk for skin damage. Educating yourself about these UV levels allows you to take proactive measures to protect yourself and enjoy the outdoors safely!
The UV Index fluctuates throughout the day, peaking dramatically in the late morning to early afternoon. Starting at a mild 2 at 07:00, it steadily climbs, reaching 3 by 08:00. By 09:00, the intensity ramps up to 5, but the real surge occurs as the clock approaches midday, with the UV Index soaring to a striking 10 at 11:00 and hitting a maximum of 11 from 12:00 to 13:00. After this intense peak, the index begins to decline, descending to 9 at 14:00, and gradually dropping to 5 by 16:00. As daylight fades, the numbers further dwindle to 3 at 17:00, and stabilizing at a safe 1 as evening sets in, from 18:00 to 19:00. This data showcases the importance of sun protection during the midday hours when the UV radiation is at its highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so does the UV Index, which significantly impacts sun safety. In January and December, the UV Index is relatively low (2), allowing for extended exposure of about 45 minutes without risk of burn. However, as spring approaches in March and peaks in April and May, the index rises to high (6) and very high (9-10), with burn times decreasing to 25-15 minutes. The summer months of June and July reach an extreme UV Index of 11, necessitating urgent precautions with burn times dropping to just 10 minutes. August and September maintain high levels, while October and November see a gradual decline back to moderate levels (4). Visitors and residents should be particularly cautious from March through September, using sunscreen, wearing protective clothing, and seeking shade during peak hours to minimize the risk of 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 |
| Shengli | 2 | 4 | 6 | 9 | 10 | 11 | 11 | 10 | 8 | 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 |
| 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 |