Last updated: July 2, 2025
In Sijiachang, China, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding UV levels is essential not only for preventing painful sunburns but also for safeguarding against long-term skin damage and the risks of skin cancers. With a Cfa climate characterized by warm summers, Sijiachang's UV exposure can escalate quickly throughout the day, reaching a peak of 12 between noon and 1 PM. Being aware of these levels empowers residents and visitors alike to enjoy the outdoors safely while minimizing their sun exposure risks.
The UV Index fluctuates throughout the day, painting a vivid picture of solar intensity. Starting from a gentle 1 at 07:00, the sun steadily rises, and by 08:00, it reaches a moderate 3. The real heat kicks in around 09:00, hitting 5, and by 10:00, it surges to 8, signaling a call to protect your skin. The peak intensity occurs at 12:00 and 13:00, where it climbs to a striking 12, highlighting the need for sunscreen and shade. As the afternoon progresses, the levels begin to decline, dropping to 11 by 14:00, then tapering off to 8 at 15:00, before easing back to 5 at 16:00. As the day dims, the UV Index falls to 3 by 17:00 and settles back to 1 by 18:00 and 19:00. Stay sun-smart during these peak hours to enjoy the outdoors safely!
| 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 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 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 |
Throughout the year, the UV Index exhibits significant seasonal fluctuations, with the highest levels typically occurring during the spring and summer months. Notably, May through August are classified as high-risk months, with an extreme UV Index peaking at 12 in July and consistently remaining at 11 from May to August. During these months, the burn time is reduced to just 10 minutes, calling for extra precautions. Visitors and residents are advised to limit sun exposure, particularly during peak hours, and to use broad-spectrum sunscreen, wear protective clothing, and seek shade whenever possible. As we transition into fall, the UV Index begins to lower, but September and October still present very high levels, so vigilance should continue. The year wraps up with lower UV exposure in November and December, but individuals should always remain mindful of UV risks.
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 |
| Sijiachang | 6 | 6 | 8 | 10 | 11 | 11 | 12 | 11 | 10 | 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 |