Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Longjiang, China, where the sun's intensity can pose significant risks to skin health. With peak UV levels reaching a staggering 11 around midday, awareness can help prevent sunburn and long-term skin damage. In this Cfa climate zone, the warm and humid summers contribute to higher UV exposure, increasing the importance of monitoring these levels. By staying informed about the UV Index, everyone can enjoy the outdoors safely and protect their skin from harmful rays.
The UV Index data paints a vivid picture of the sun's intensity throughout the day. Beginning at 07:00, the index starts at a modest 2, gradually climbing to 4 by 08:00. As the sun rises higher, it peaks impressively at 11 between 11:00 and 13:00, reflecting the strongest ultra-violet rays of the day. From this zenith, the index begins to descend, dipping to 9 at 14:00, then tumbling down to 6 by 15:00 and continuing to decline, reaching 3 by 16:00. The evening hours show a gentle drop, concluding with a 1 at 18:00 and finally falling to 0 at 19:00, marking the day's end. To enjoy the outdoors safely, it's best to limit sun exposure during the peak hours of 11:00-13:00 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 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 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, 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 |
| Longjiang | 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 |