Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Zhoinda, China, where the climate is classified as ET, characterized by significant elevation and varying temperatures. With UV levels soaring to a maximum of 16 during midday, being aware of these readings is essential for protecting yourself against harmful sun exposure. Whether it’s preventing painful sunburns or safeguarding your skin health in the long run, knowing the UV Index can help you make informed decisions about sun safety. As you navigate Zhoinda’s beautiful outdoors, remember that the intense UV rays, particularly between 10 AM and 2 PM, require vigilance to enjoy the sunshine responsibly.
At dawn, the UV Index remains low, peaking at 1 by 7:00 AM. As the sun climbs higher, the intensity of ultraviolet radiation ramps up, reaching 2 by 8:00 and spiking to a notable 4 by 9:00. The real breakthrough occurs at 10:00 AM, when the index hits 7, indicating a significant rise in sun exposure risks. By noon, the index escalates to a staggering 14, and it soars to its maximum at 1:00 PM, reaching a peak of 16. This level of UV radiation stays steady through 2:00 PM before gently declining, dipping to 13 by 3:00 PM and gradually tapering off to 6 at 5:00 PM. As the day winds down, the UV Index falls back to more manageable levels, measuring 3 by 6:00 PM and returning to 1 by 7:00 PM, reminding us of the importance of sun safety during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 16 | extreme | 10 min |
| 14:00 | 16 | extreme | 10 min |
| 15:00 | 13 | extreme | 10 min |
| 16:00 | 10 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
The UV Index demonstrates significant seasonal variation, with the highest risk months occurring from February through October. Particularly notable is April to October, where the UV Index reaches extreme levels of 14 to 18, allowing for a burn time of just 10 minutes. March sees the beginning of this extreme exposure, starting at 14, while February marks the transition with a very high level of 9. Conversely, during the winter months, December and January, the Index lowers to 6, categorized as high, allowing for burn times of 25 minutes. Given this data, it is crucial for both visitors and residents to prioritize sun protection during high-risk months, especially between March and October, by wearing sunscreen, protective clothing, and limiting sun 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 |
| 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 |
| Zhoinda | 6 | 9 | 14 | 16 | 18 | 16 | 15 | 15 | 15 | 11 | 9 | 6 |