Last updated: July 2, 2025
In Mentougou, China, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding UV levels can help residents and visitors alike prevent sunburn and mitigate long-term skin damage. With Mentougou's Dwa climate, characterized by sunny summers and variable seasons, UV exposure can peak, especially during midday hours when the UV Index reaches levels of 10, posing a significant risk to unprotected skin. By being aware of the UV Index throughout the day, you can take necessary precautions to enjoy the outdoors safely.
As the day unfolds, the UV Index rises steadily, peaking at a remarkable 10 between noon and 1 PM, signaling the most intense sun exposure. Early risers at 7 AM will experience a minimal index of 1, making it a safe time for outdoor activities. However, as the clock ticks to 9 AM, the index climbs to 5, indicating a growing need for sun protection. By 11 AM, it escalates to a striking 9, urging everyone to seek shade or wear sunscreen if they venture outside. The afternoon sees a gradual drop, with levels falling to 4 by 4 PM, and the sun's strength continues to wane, reaching 1 by 7 PM. Overall, plan your outdoor activities around the sun's peak to ensure safety while enjoying the sunny day!
| 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 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index undergoes significant changes, indicating varying levels of sun exposure risk. January and December show a low UV Index of 2, with an extended burn time of 45 minutes. However, as we transition into February, the index rises to 4, marking the start of moderate exposure. The risk peaks from March to September, especially in the summer months of June and July, where the UV Index reaches 10—the highest category—with only a 15-minute burn time. These months—particularly from April to August—are categorized as very high risk, making them critical periods for protective measures. As the seasons change into October and November, the UV Index declines again to moderate levels. Visitors and residents are advised to take proactive measures during high-risk months, including using sunscreen, wearing protective clothing, and seeking shade, especially between noon 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beijing UVI | 2 | 3 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 6 | 4 | 2 |
| Mentougou | 2 | 4 | 6 | 9 | 9 | 9 | 10 | 9 | 8 | 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 |