Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Yidu, China, as it serves as a vital tool for safeguarding skin health and preventing sunburn. With maximum UV levels peaking at a dangerous 10 around noon, awareness of these fluctuating UV readings can help you make informed choices about sun protection throughout the day. Given Yidu's Cwa climate, characterized by hot summers and mild winters, outdoor activities can expose you to significant UV risks, especially during the peak hours of 10 AM to 2 PM. Stay safe and enjoy the sunshine while protecting your skin!
The UV Index reveals an enlightening story of the sun's intensity throughout the day. Starting at a mild level of 2 at 07:00, it gradually escalates, reaching a moderate 3 by 08:00. The sun finds its strength as 09:00 brings a robust 6, soon skyrocketing to a peak of 10 by noon. This midday zenith of UV radiation is a call for caution, as the index then hovers around 9 at 13:00 and 8 through 14:00, only to gracefully descend in the afternoon. By 15:00, it drops to 5, easing further to 3 by 16:00, and finally, the day winds down with gentle readings of 2 at 17:00 and 1 by 18:00 and 19:00. Protective measures during the peak hours are essential, allowing sun enthusiasts to enjoy the bright day safely!
| 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 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | 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 | 1 | low | 45 min |
Throughout the year, UV Index levels fluctuate significantly, with the highest values occurring during the summer months. March marks the transition into high UV exposure with an index of 6, while April to August sees a peak UV Index ranging from 8 to 10, placing these months in the very high category and reducing safe burn time to just 15 minutes. July and August represent the highest risk months, with UV Index values reaching a dangerous 10. As summer wanes, September and October still pose a threat with 8 and 7 respectively, indicating a need for caution. Conversely, January, February, November, and December have a moderate UV Index around 3 to 4, allowing for longer burn times of 30 minutes. Visitors and residents should remain vigilant, especially from March to October, and take appropriate sun protection measures during these high-risk months.
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 |
| Yidu | 3 | 4 | 6 | 8 | 9 | 9 | 10 | 10 | 8 | 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 |