Last updated: July 2, 2025
In Longtian, China, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. As UV levels soar—peaking at a staggering 13 around noon—local residents and visitors alike must recognize the importance of protecting their skin from the sun's harmful rays. Understanding these levels not only helps in preventing immediate discomfort from sunburn but also plays a vital role in long-term skin health. With a Cfa climate that often exposes individuals to elevated UV risks, knowing when to seek shade and apply sunscreen can make all the difference in enjoying the beautiful outdoors while safeguarding your wellbeing.
The UV Index for the day reveals a dynamic intensity in solar radiation, peaking during the early afternoon. Starting from a mild 1 at 07:00, the index gradually climbs, hitting 3 by 08:00 and 5 by 09:00. However, the sun truly makes its presence felt as it reaches an impressive 13 at 12:00, marking the essence of midday sun. The highest UV Index occurs at 11:00, soaring to 11 before it gradually declines to 8 at 15:00. As afternoon turns to evening, the intensity wanes, dropping to 1 by 19:00. This data emphasizes the importance of sun protection during peak hours, particularly between 10:00 and 14:00, ensuring that everyone enjoys the outdoors safely.
| 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 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | 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 exposure levels exhibit significant seasonal changes, peaking during the summer months. High-risk months for UV exposure include May through August, where the UV Index reaches extreme levels, with indices of 11 to 13 and a notably short burn time of just 10 minutes. This is crucial for both visitors and residents, who should take precautions such as seeking shade, wearing protective clothing, and applying sunscreen frequently. As the year progresses into September and October, the risk remains elevated with indices of 10 and 9, requiring continued vigilance. In contrast, winter months like January and February see UV indices drop, yet still retain a high to very high exposure category. Therefore, while UV concerns lessen towards the end of the year, it is advisable to remain cautious, particularly during the transitional spring and summer 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 |
| 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 |
| Longtian | 6 | 8 | 9 | 10 | 11 | 12 | 13 | 12 | 10 | 9 | 7 | 5 |
| 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 |