Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Hongyansi, China, as it provides essential information about harmful ultraviolet radiation from the sun. Awareness of UV levels is key to preventing sunburn and protecting skin health, especially as the region experiences a warm temperate climate (Cfa) with significant sun exposure. On typical days, UV levels can soar—peaking at 12 around midday—posing serious risks for skin damage. By staying informed about the UV Index, you can enjoy the sun safely while keeping your skin protected.
The UV Index today tells a striking story of the sun's intensity as the day unfolds. Starting at 07:00, the index peaks at a gentle 1, perfect for an early morning stroll. As the sun rises higher, a noticeable increase occurs, reaching 3 by 08:00 and then surging to a robust 5 at 09:00. By 10:00, the index hits 8, and it truly shifts into high gear at 11:00, peaking at an impressive 10. The zenith arrives with an intense 12 at 12:00 and holds steady, emphasizing the need for sun protection. As afternoon rolls in, a gradual decline begins, slipping to 10 at 14:00, then tapering off to 8 by 15:00 and 5 at 16:00. By the evening, the UV threat diminishes significantly to 2 at 17:00 and is back down to 1 by 19:00. Remember to stay sun-safe during the midday hours when the UV index is at its highest!
| 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 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, peaking in the summer months. Notably, April through September presents the highest risk for UV exposure, with indices reaching extreme levels of 11 to 13 and a burn time as low as 10 minutes during July and August. March also shows a high risk with a UV Index of 9. Visitors and residents should take precautions during these months by wearing protective clothing, applying sunscreen, and seeking shade, especially during midday hours. In contrast, the months of December and January report lower UV levels, making them comparatively safer for outdoor activities, but still warranting attention with a high UV Index in January. To ensure safe sun exposure year-round, it's essential to remain vigilant, adjust outdoor plans accordingly, and protect your skin during peak hours.
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 |
| Hongyansi | 6 | 7 | 9 | 11 | 12 | 12 | 13 | 12 | 12 | 9 | 7 | 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 |