Last updated: June 2, 2025
Living in Baiyun, China, it's essential to stay informed about the UV Index, a critical measure that helps you understand the sun’s harmful radiation levels. Awareness of UV levels is paramount for preventing sunburn and maintaining skin health, especially in a region where the climate can expose residents to significant UV risks, particularly during the peak hours of 10 AM to 2 PM. Baiyun enjoys a Dwb climate, characterized by distinct seasonal changes, which means UV exposure can vary greatly throughout the year. With a maximum UV Index reaching 8 midday, it's important to take protective measures on sunny days to safeguard your skin and overall well-being.
As the sun rises, the UV Index begins to climb, peaking at a maximum of 8 between 11:00 AM and 12:00 PM. This midday period is crucial for sun safety, with the index suggesting a high risk of harm from unprotected sun exposure. Starting from a mild 3 at 7:00 AM, the index escalates to a moderate 6 at 9:00 AM, and then swiftly reaches 7 by 10:00 AM. After hitting its zenith, the UV levels gradually decline to 6 by 2:00 PM and then continue to drop, falling to 1 by 5:00 PM and remaining low into the evening. Remember, during the peak hours, it’s essential to seek shade, wear protective clothing, and apply sunscreen to minimize the risks associated with UV radiation. The day's progression underscores the significance of UV awareness to ensure both safety and enjoyment in the sun.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, the UV Index reflects a significant variation in sun exposure risks, especially from March to August. During the high-risk months of April to August, the UV Index escalates, reaching a peak of 9 in July, indicating a very high exposure category and a burn time of only 15 minutes. In contrast, the months of January, February, November, and December present a low risk with an UV Index ranging from 1 to 2, where individuals can enjoy up to 45 minutes of sun exposure without protection. Residents and visitors are strongly advised to take precautions during the heightened UV index periods, such as applying broad-spectrum sunscreen, seeking shade, and wearing protective clothing to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Baiyun | 1 | 2 | 4 | 6 | 7 | 8 | 9 | 8 | 6 | 4 | 2 | 1 |
| 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 |