Last updated: June 2, 2025
In Gensi, China, being aware of the UV Index is crucial for safeguarding your skin against harmful ultraviolet radiation. Understanding UV levels helps in preventing sunburn and maintaining overall skin health, especially during peak hours when the intensity is at its highest. With a Cfa climate that offers warm summers and varying UV exposure risks throughout the day, Gensi residents should be particularly vigilant. The UV Index here peaks at 11 noon, indicating an extreme danger level, making it essential to take protective measures during outdoor activities to enjoy the sun safely.
From 07:00 to 19:00, the UV Index experiences a dynamic climb, peaking sharply at 12:00 with a high of 11. Early morning hours start low, with a manageable 2 at 07:00, but as the sun ascends, the intensity increases. By 10:00, the index reaches 8, highlighting a need for sun protection. The critical hour arrives at 11:00, where the index hits 10, indicating very high risk of harm from unprotected sun exposure. After the midday peak, a gradual decline begins, with values dropping to 5 by 15:00, and continuing down to 0 by evening at 19:00. This pattern emphasizes the importance of sun safety measures, especially during those peak hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | 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 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 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 | 0 | low | 45 min |
Throughout the year, the UV Index experiences significant seasonal fluctuations. From January to February, there is a gradual increase in UV radiation, moving from a moderate index of 4 to a high index of 6. As spring approaches, the UV levels spike dramatically, peaking at an extreme UV index of 11 in July and August, where the burn time falls to as little as 10 minutes. The high-risk months for UV exposure are from March to September, particularly the peak summer months when UV levels are at their highest. Visitors and residents are advised to take precautions during these months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak hours to minimize the risk of skin damage. As autumn and winter roll in, the UV Index gradually decreases, making it safer for outdoor activities with less intensive sun protection needed.
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 |
| Gensi | 4 | 6 | 8 | 10 | 10 | 10 | 11 | 11 | 10 | 8 | 5 | 4 |
| 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 |