Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Bishan, China, as it plays a significant role in protecting skin health and preventing sunburn. With the region's humid subtropical climate (Cfa), Bishan experiences a wide range of UV exposure throughout the day, peaking at an alarming index of 12 around noon. By being aware of varying UV levels, you can make informed choices about sun protection, ensuring you and your loved ones stay safe while enjoying the outdoors. Stay vigilant and prioritize your skin's defense against those harmful rays—your future self will thank you!
As the day unfolds, the UV Index rises dramatically, peaking at 12 between noon and 1 PM—the sun's rays are at their strongest during this time. Starting from a gentle 2 at 7 AM, the index gradually climbs to 9 by 10 AM, hitting 11 at 11 AM. The highest impact occurs at 12 PM and 1 PM, urging caution for outdoor enthusiasts. Following this zenith, the UV levels begin to recede, dropping to 9 at 2 PM and sliding to 1 by 6 PM. It's a clear reminder to prioritize sun safety during peak hours to protect your skin from harmful UV exposure!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 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 |
Throughout the year, UV Index levels fluctuate significantly, indicating varying risks for sun exposure. From January to February, the UV Index is high (6-7), suggesting that individuals should take precautions when spending time outdoors, with a burn time of 25 minutes. However, as spring approaches, March and April experience a surge to very high levels (9-10), reducing safe exposure time to just 15 minutes. The summer months of May through August reach their peak, with an extreme UV Index of 11-12 and a burn time of only 10 minutes, representing the highest risk for sunburn and skin damage. September begins the gradual decline to 11, while October sees a return to very high levels at 9. By November and December, UV levels drop back to high (6) and moderate (5), allowing for longer safe exposure times of 25-30 minutes. Visitors and residents should remain vigilant, especially from March through September, by utilizing protective measures such as sunscreen, hats, and clothing to safeguard against harmful UV radiation during these high-risk months.
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 |
| Bishan | 6 | 7 | 9 | 10 | 11 | 12 | 12 | 12 | 11 | 9 | 6 | 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 |