Last updated: June 2, 2025
Staying informed about the UV Index is crucial for residents and visitors in Changliang, China, where the subtropical climate can lead to intense sun exposure throughout the year. Understanding UV levels is essential not only for preventing sunburn but also for maintaining long-term skin health. With mid-day UV Index readings soaring as high as 13—well into the extreme range—it's vital to take protective measures during peak hours. As you navigate the sunny streets of Changliang, being aware of UV risks can help ensure that your outdoor experiences are both enjoyable and safe.
The UV Index throughout the day presents a fascinating picture of sun intensity. Starting at a mild 1 at 07:00, the index gradually climbs, reaching 3 by 08:00. As the morning progresses, it peaks at an impressive 13 at 12:00 and 13:00, signaling a critical time for sun protection. The intensity begins to decline in the afternoon, dropping to 8 by 15:00. By 18:00, it retreats back to 1, demonstrating the inevitable waning of sunlight as the day draws to a close. This data underscores the importance of being sun-smart, particularly between 10:00 and 15:00, when UV exposure is at its highest.
| 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 | 13 | 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, the UV Index experiences significant seasonal changes, peaking in the summer months. From January to February, the UV Index begins at 6 and escalates to 7, categorizing the exposure as high, with a burn time of 25 minutes. As spring approaches, March sees an increase to 8 (very high), leading to a decrease in burn time to 15 minutes. The UV Index reaches its maximum intensity from April to September, with values between 11 and 13 (extreme), resulting in a critical burn time of only 10 minutes. The risk notably subsides in October with a drop to 9 (very high) and continues to decline throughout November and December, when the levels are 7 (high) and 5 (moderate) respectively, allowing for 25 and 30 minutes before burn occurs. Visitors and residents are advised to take precautionary measures during the high-risk months (April to September), ensuring adequate sun protection such as sunscreen, hats, and protective clothing to minimize the risk of skin damage.
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 |
| Changliang | 6 | 7 | 8 | 11 | 12 | 13 | 12 | 12 | 11 | 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 |