Last updated: June 2, 2025
Understanding the UV Index is crucial for the residents of Huiyuan, China, where sunlight can be both a blessing and a risk. As the temperatures rise in this semi-arid climate, the intensity of UV radiation peaks, especially around midday when the index can reach a staggering 9. Recognizing these levels is essential for preventing sunburn and protecting overall skin health. With UV exposure risks being particularly high during the hours of 10 AM to 2 PM, staying informed about the UV Index can empower you to enjoy the sun safely while safeguarding your skin from potential harm.
The UV Index throughout the day presents a clear pattern of increasing intensity, peaking during midday. At 07:00, the index starts at a low 1, perfect for early risers. As the sun climbs higher, it reaches 3 by 08:00 and 4 by 09:00. The real intensity strikes between 10:00 and 13:00, with values soaring to 6, then peaking at a sizzling 9 at 12:00 and 13:00. Post-lunch, a gradual decline begins—falling to 8 at 14:00, 7 at 15:00, and down to 5 by 16:00. As daylight fades, the UV Index drops significantly, returning to a 3 by 17:00, and then settling back down to a safe 1 by 18:00 and 19:00. Be sure to enjoy the sunshine safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 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 experiences significant seasonal fluctuations, affecting sun exposure and burn times. January and December are characterized by low UV levels (Index 2), allowing for longer skin exposure before burning, approximately 45 minutes. As spring approaches, February sees a moderate increase (Index 3) with a burn time of 30 minutes, transitioning into higher levels in March (Index 6) and April (Index 7), where the burn time decreases to 25 minutes. The peak months for UV exposure are May through August, with extremely high levels (UV Index 9) during these summer months and a critical burn time of just 15 minutes. September begins a gentle decline back to high levels (Index 7) while October and November see moderate levels again. Visitors and residents should be particularly vigilant from March to August, ensuring they take protective measures such as wearing sunscreen, protective clothing, and limiting sun exposure during peak hours to avoid skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Huiyuan | 2 | 3 | 6 | 7 | 9 | 9 | 9 | 8 | 7 | 5 | 3 | 2 |
| 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 |
| 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 |