Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Altay, China, where the unique Dfb climate brings both beautiful and challenging weather patterns. With UV levels peaking at 9 around noon, awareness of sun exposure is vital for preventing sunburn and protecting skin health. As the sun's intensity can vary throughout the day, recognizing these fluctuations helps individuals make informed decisions about outdoor activities, ensuring both enjoyment and safety under the Altay skies. Let’s delve deeper into understanding how UV levels impact your time in this stunning region.
The UV Index displays a dynamic pattern throughout the day, peaking at 12:00 PM with a striking value of 9, indicating very high risk for harm from unprotected sun exposure. The day begins with a modest reading of 2 at 7:00 AM, steadily climbing as the sun rises. By 10:00 AM, the index reaches 7, signaling a warning to seek shade during midday hours. As the clock strikes 11:00 AM, it escalates to 8, and peaks at 12:00 PM. Post-peak, a gentle decline follows, with values dropping to 5 by 3:00 PM and tapering to a low of 1 by 6:00 PM. It’s a reminder that while the sun can be inviting, precautions should be taken as its potency intensifies through the day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 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 |
Seasonal changes in the UV Index highlight significant variations in sun exposure throughout the year. From January to February, the UV Index remains low to moderate, allowing for safer outdoor activities with burn times of 45 minutes and 30 minutes, respectively. However, high-risk months emerge from March through August, with UV Index values peaking at 9 during May, June, and July—indicating very high exposure and a quick burn time of just 15 minutes. Visitors and residents should exercise caution during these months, wearing protective clothing and sunscreen, and seeking shade during peak sunlight hours. As the year progresses into September and October, UV levels begin to decrease, returning to moderate levels by November and December. It is advisable to remain vigilant about UV safety, particularly during the sunniest months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Altay | 2 | 3 | 6 | 7 | 9 | 9 | 9 | 8 | 6 | 4 | 2 | 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 |