Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Xuchang, China, where the climate falls within the Cwa zone, often exposing individuals to high levels of ultraviolet radiation. With the potential for skin damage escalating during peak hours—such as the alarming UV Index of 10 between noon and 1 PM—awareness of these levels is essential for sunburn prevention and maintaining long-term skin health. By keeping an eye on the UV Index, you can protect yourself from harmful effects, especially in areas like Xuchang, where sunny days are plentiful and UV exposure risks can be significant. Stay informed, stay safe, and enjoy the sunshine wisely!
As the sun rises, the UV Index gradually transitions from a mild 1 at 07:00 to an invigorating 3 by 08:00. The peak UV intensity hits its stride between 12:00 and 13:00, reaching a striking 10, a clear call for sun protection. As the afternoon progresses, the index begins to decline, tapering off to 8 at 14:00, 6 at 15:00, and eventually settling to a gentle 2 by 17:00. By evening, the UV levels dip back down, returning to a safe 1, indicating it's time to relax and enjoy the cooler, softer light of sunset.
| 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | 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 demonstrates noticeable seasonal changes, with high-risk months primarily occurring from March through August. In March, the UV Index escalates to 7, indicating a high risk of harm from unprotected sun exposure, with a recommended burn time of just 25 minutes. As the summer months approach, April sees an increase to 8, followed by an even higher index of 10 in May and June. The most extreme levels are reached in July and August, both registering a UV Index of 11, where the burn time drops to a mere 10 minutes. After this peak, the risk decreases in September and October, but remains very high. For safe sun exposure, it is crucial for visitors and residents to limit their time outdoors, wear protective clothing, and apply sunscreen, particularly during these high-risk months. In the fall and winter, from November to February, the UV levels drop to moderate and low, allowing more leisurely outdoor activities with appropriate precautions.
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 |
| Xuchang | 4 | 5 | 7 | 8 | 10 | 10 | 11 | 11 | 8 | 8 | 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 |