Last updated: June 2, 2025
In Yishan, China, being aware of the UV Index is essential for protecting your skin and overall health. The UV Index provides crucial information on the intensity of ultraviolet radiation reaching the Earth's surface, helping residents and visitors swiftly identify the risk of sunburn and long-term skin damage. Understanding these UV levels is particularly important in Yishan's Cwa climate, where sun exposure can escalate quickly, reaching a high of 11 around noon. With such variability—from a manageable 2 at sunrise to a peak 10 in the midday sun—being UV-conscious is key to enjoying the outdoors safely while preserving your skin health.
The UV Index today reveals a dramatic rise as the sun climbs higher in the sky, peaking at an intense 11 around 12:00 PM. Starting off with a mild 2 at 7:00 AM, the index quickly escalates, reaching a moderate 6 by 9:00 AM. The heat intensifies, hitting 8 by 10:00 AM, and surges to its maximum of 10 at 11:00 AM, advising everyone to take precautions against harmful UV rays. As the afternoon progresses, the index gradually declines, dropping to 5 by 3:00 PM, before tapering off to 1 by 6:00 PM. Even though the UV exposure decreases later in the day, it's wise to remain vigilant during peak hours to safeguard your skin.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the patterns of UV exposure, with significant increases typically observed from March through September. The high-risk months for UV exposure are April through September, when the UV Index often reaches very high to extreme levels, particularly peaking in June at an Index of 11. Residents and visitors should be particularly cautious during these months, as the potential for skin damage increases dramatically; burn times can drop to as little as 10 minutes in June. To protect yourself, it's recommended to apply sunscreen regularly, wear protective clothing, and seek shade during peak sun hours. From October to February, the UV levels decrease significantly, with burn times extending back to 30 minutes in January and November, making outdoor activities safer, but still requiring some level of UV protection during sunny days.
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 |
| Yishan | 4 | 5 | 7 | 8 | 10 | 11 | 10 | 10 | 9 | 7 | 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 |