Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of Henghe, China, where the unique Cfa climate can lead to varying levels of sun exposure throughout the day. Keeping track of UV levels is essential not only for sunburn prevention but also for maintaining overall skin health. With peak UV levels soaring to a high of 13 around midday, it’s vital to be aware of the risks associated with intense sunlight, especially as the sun rises in the morning and sets in the evening. Equip yourself with the knowledge to enjoy the outdoors safely while protecting your skin from harmful rays!
The UV Index today showcases a dramatic rise in solar intensity as the day progresses. Starting gently at 1 at 07:00, it climbs steadily, reaching 2 by 08:00. The real peak occurs between 11:00 and 13:00, where it soars to a blistering 13—indicative of heightened sun exposure risk. Post noontime, the index begins to taper off, with values descending to 9 at 15:00 and further down to 3 by 17:00. As evening approaches, the UV Index drops back to 1 by 18:00 and remains there until 19:00. For outdoor enthusiasts, it's essential to keep in mind the midday hours for optimal sun safety!
| 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 | 10 | very high | 15 min |
| 12:00 | 12 | 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 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV Index readings display notable seasonal changes, with significant peaks during the summer months. January and February see high UV levels (6 and 7 respectively), where a burn can occur in as little as 25 minutes. This escalates in March with a very high index of 10 and a reduced burn time of 15 minutes. The UV levels reach their peak in April and May, categorized as extreme with indexes of 11 and 12, demanding diligent sun protection as burn times drop to just 10 minutes. The extreme UV exposure persists through June and July, followed by August and September, both maintaining a 12 rating. In October, the index decreases to 9 (very high), allowing a slightly longer burn time of 15 minutes, while November and December return to high and moderate levels respectively. Visitors and residents should exercise caution during the peak months from April to September, employing protective measures such as sunscreen, hats, and shade to minimize UV exposure risks.
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 |
| Henghe | 6 | 7 | 10 | 11 | 12 | 13 | 13 | 12 | 12 | 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 |