Last updated: August 1, 2025
Understanding the UV Index in Erdaocha, China is crucial for residents and visitors alike, as it serves as a vital gauge of ultraviolet radiation levels that can affect skin health and increase the risk of sunburn. With the city experiencing a Dwb climate, which combines dry winters with warm summers, locals face variable UV exposure risks throughout the day. During peak hours, especially between 10 AM and 2 PM, the UV Index can soar to dangerous levels, peaking at 11—a reminder of the importance of sun safety measures. Being aware of UV levels not only helps in preventing immediate skin damage but also promotes long-term health, making it essential to keep an eye on the index when planning outdoor activities.
As the sun rises, the UV Index steadily climbs, starting at a moderate 3 by 7:00 AM. By 8:00 AM, it increases to 5, signaling the onset of peak sun exposure. The intensity reaches its pinnacle at 11:00 AM with a striking 11, indicating extremely high UV radiation. From there, the index gradually declines, staying at 10 at 12:00 PM before dropping to 9 by 1:00 PM. The afternoon sees a noticeable decrease with the UV Index falling to 7 at 2:00 PM and continuing to decline, hitting 1 by 5:00 PM. Finally, as evening approaches, the UV Index settles at a safe 0 by 7:00 PM, highlighting the importance of sun safety during those peak hours. Remember to protect your skin and stay hydrated throughout the day!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index exhibits seasonal fluctuations, reflecting varying risk levels for sun exposure. The high-risk months are concentrated from May to August, where the UV Index reaches very high to extreme levels (peaking at 11 in July), resulting in significantly reduced burn times, as short as 10 minutes in peak summer. Conversely, during the winter months of January and December, the UV Index remains at a low level of 2, allowing for extended exposure times of 45 minutes without substantial risk of sunburn. Visitors and residents are advised to take precautionary measures during high UV months, such as wearing protective clothing, applying sunscreen, and seeking shade, especially between 11 AM and 4 PM when the sun’s rays are strongest.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Erdaocha | 2 | 3 | 6 | 7 | 8 | 9 | 11 | 10 | 7 | 5 | 3 | 2 |
| 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 |