Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Tongxu Chengguanzhen, China, where the climate is characterized by hot summers and pronounced seasonal variations. With UV levels peaking at 11 during midday, awareness of these readings is essential for sunburn prevention and maintaining overall skin health. By grasping how different times of day impact UV exposure, individuals can take proactive measures to shield themselves from harmful rays, ensuring enjoyable outdoor activities without compromising their well-being in this vibrant locale.
At dawn, the UV Index begins its ascent, starting with a gentle 1 at 07:00. As the sun climbs higher, it gains strength, peaking at an intense 11 by 12:00 and 13:00, indicating a high risk of harm from unprotected sun exposure. The UV Index starts to descend after this peak, dropping to 9 at 14:00, and gradually easing into more manageable levels of 6 by 15:00 and 4 at 16:00. By the late afternoon and into the evening, the index cools off, returning to 2 at 17:00, and finally lingering around 1 for the rest of the evening. Planning your outdoor activities? The optimal window for sun exposure is from 10:00 to 14:00, but don't forget your sunscreen!
| 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 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | 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, UV levels exhibit significant seasonal changes, with high-risk months emerging from late spring to summer. Specifically, March begins a notable increase, reaching a very high UV Index of 8 in April, while May and June see a peak of 10. The extreme levels in July and August, with a UV Index of 11, indicate the highest risk for skin damage during these months, where burn time drops to just 10 minutes. As UV levels decrease in September and October, caution is still advised, as they remain very high. In contrast, January, February, November, and December show moderate levels, allowing for relaxed sun exposure. To protect your skin, especially during high-risk months, it is essential for both visitors and residents to apply sunscreen regularly, wear protective clothing, and seek shade during peak sunlight 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 |
| Tongxu Chengguanzhen | 3 | 5 | 7 | 8 | 10 | 10 | 11 | 11 | 8 | 8 | 5 | 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 |