Last updated: July 2, 2025
In Jiyuan, China, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. High UV levels can cause immediate harm and long-term damage, making it essential for residents and visitors to stay informed about daily UV exposure. With a Cwa climate characterized by hot summers, the risk of intense UV radiation is particularly pronounced around midday, peaking at a staggering 10 between 12 PM and 1 PM. By being aware of the UV Index, you can take proactive measures to protect yourself from harmful rays while enjoying the outdoors.
The UV Index peaks during the midday sun, reaching a maximum of 10 at noon, indicating a high risk of harm from unprotected sun exposure. As the day progresses, the index rises steadily from a mild 1 at 07:00 to an intensity of 9 by 11:00, prompting outdoor enthusiasts to stay protected. From 12:00 to 13:00, the UV Index remains at its highest, encouraging the use of sunscreen, hats, and protective clothing. Following this peak, it begins to dip gradually, falling to 4 by 16:00 and continuing to decrease to 1 by 19:00, when the day winds down and the sun begins to set. It's crucial to be mindful of these fluctuations and take necessary precautions during the peak hours!
| 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 | 9 | very high | 15 min |
| 15:00 | 7 | 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 Index levels fluctuate significantly, peaking during the warm months. January and December see moderate UV exposure with an index of 3, allowing up to 30 minutes of sun exposure without significant risk. As spring approaches, March brings a high index of 7, reducing safe burn time to 25 minutes. The danger escalates in April and May, with indices reaching 8 and 10 respectively, where burn times drop to just 15 minutes in very high categories. June marks the start of an extreme UV Index at 11 for a perilously low 10 minutes of burn time. Although the risk slightly decreases in July and August, with indices of 10 and 9, the need for protection remains critical. September carries similar warnings, while October sees a return to high UV exposure at 7. Finally, November transitions back to moderate levels. Visitors and residents should be particularly cautious from March through September when the risk is highest, ensuring they wear appropriate sun protection and limit exposure during peak 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 |
| Jiyuan | 3 | 5 | 7 | 8 | 10 | 11 | 10 | 9 | 9 | 7 | 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 |