Last updated: August 1, 2025
In Longbu, China, being aware of the UV Index is essential for protecting your skin and overall health. As the UV levels peak in the midday sun—reaching a striking 13 at noon—understanding these fluctuations helps prevent painful sunburn and long-term skin damage. With its Cfa climate, characterized by hot summers and moderate UV exposure, residents and visitors alike should stay informed about daily UV trends to enjoy the sun responsibly. Prioritizing UV awareness not only safeguards your skin but also encourages outdoor activities in this vibrant region without the worry of overexposure.
The UV Index on this particular day reflects the sun's intensity, peaking around 12:00 PM with a striking 13. Early morning hours start off gently, with a 1 at 7:00 AM and gradually climbing to a moderate 3 by 8:00 AM. By 9:00 AM, the index reaches a notable 6, but the afternoon demands attention as it escalates sharply to 12 and then stabilizes at 13 between 12:00 PM and 1:00 PM. As the sun begins to descend, the UV levels reduce, dropping to 10 at 2:00 PM, then tapering off to a manageable 4 by 4:00 PM. Finally, as the day winds down, the index falls to 1 by 6:00 PM, confirming that the sun’s effects diminish as twilight approaches. Be sure to protect your skin during the midday peak!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | 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 | 0 | low | 45 min |
Throughout the year, UV exposure levels fluctuate significantly, with high-risk months generally spanning from February through September, where the UV Index reaches extreme levels of 11 and higher. Notably, May, July, and August peak at a UV Index of 13, demanding particularly cautious behavior as the burn time drops to just 10 minutes. As we transition to fall and winter, UV levels gradually decrease, with October and November still presenting a very high concern, while January and December return to a high category with more extended burn times of 25 minutes. To protect against the harmful effects of UV radiation, visitors and residents should prioritize sun safety practices—such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade—particularly during the high-risk months when UV exposure is at its peak.
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 |
| Longbu | 7 | 9 | 11 | 11 | 13 | 12 | 13 | 13 | 11 | 10 | 8 | 6 |
| 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 |