Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Hongsipu, China, where the climate tends to amplify ultraviolet radiation exposure. Being aware of UV levels can significantly aid in sunburn prevention and promote overall skin health, especially during peak hours when the index reaches its maximum of 11 around noon and early afternoon. With typical UV exposure risks peaking in the summer months, learning to gauge and respond to these levels can help protect your skin and ensure you enjoy the sunny days ahead safely.
The UV Index showcases a dramatic rise as the day progresses, peaking at noon with a striking value of 11. Starting from a gentle 1 at 07:00, the index escalates through the morning, hitting 4 by 09:00 and escalating sharply to 7 at 10:00. The intensity continues to ramp up, reaching a notable 9 by 11:00. As the sun reaches its zenith, the UV Index remains steadfast at 11 from 12:00 to 13:00, signaling a need for sun protection during these hours. A gradual decline follows, with values descending to 10 at 14:00, then 9 at 15:00. As daylight fades, the UV Index gently recedes, finishing the day at 2 by 18:00 and dropping back to 1 by 19:00. This dynamic data highlights the importance of monitoring UV exposure, especially during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index experiences notable fluctuations throughout the year, with peak values occurring during the summer months. From March to August, the UV Index escalates from 7 (high) in March to an extreme 11 in May through August, making these months particularly hazardous for sun exposure. The high-risk months are clearly defined as April through August, where burn times decrease to as little as 10 minutes. As a result, visitors and residents are advised to take precautionary measures during these months, including wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during peak sun hours. As the seasons transition into fall and winter, the UV Index decreases significantly, providing a safer environment for outdoor activities, with more moderate levels in November and December. Stay vigilant and protect yourself against the sun’s harmful rays, especially in the peak summer 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 |
| Hongsipu | 3 | 5 | 7 | 9 | 11 | 11 | 11 | 11 | 9 | 7 | 4 | 3 |
| 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 |
| 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 |