Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Changzheng, China. With the region's Am climate zone exposing inhabitants to varying UV levels throughout the day, awareness can protect against harmful effects like sunburn and long-term skin damage. The UV Index peaks between 11:00 AM and 1:00 PM, reaching a maximum of 14, indicating a severe risk of harm from unprotected sun exposure. By staying informed about these daily fluctuations, you can better safeguard your skin and enjoy the sunny days ahead!
The UV Index reveals a dynamic range of exposure throughout the day, starting gently at 1 by 07:00 and climbing steadily to a peak of 14 between 12:00 and 13:00. As the sun reaches its zenith, safety precautions are crucial, especially during the hour of 11:00 when the index hits 11. After the intense midday sun, the index gradually descends, dropping to 9 at 15:00, and mellowing out to 1 by 19:00. This clear pattern underscores the importance of sun protection during the most intense hours, ensuring a safe and enjoyable time outdoors.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 5 | moderate | 30 min |
10:00 | 8 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 14 | extreme | 10 min |
14:00 | 12 | extreme | 10 min |
15:00 | 9 | 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 |
Seasonal changes in UV exposure reveal a pronounced peak during the warmer months, particularly from March to October, where the UV Index remains in the extreme category (ranging from 13 to 14), with a notably high risk of skin damage in just 10 minutes of sun exposure. February and January also present significant risks, with UV Indexes of 11 and 9 respectively, suggesting more caution in these months as well, especially for outdoor activities. November and December see a reduction in UV intensity, but the Index remains at a very high level of 9 and 8, indicating that even in winter, protective measures against UV exposure are necessary. Visitors and residents are advised to prioritize sun safety during these high-risk months by wearing protective clothing, applying sunscreen regularly, and limiting time in direct sunlight, particularly during midday hours when the sun’s rays are strongest.
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 |
Changzheng | 9 | 11 | 13 | 13 | 14 | 13 | 14 | 14 | 13 | 12 | 9 | 8 |