Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Trosna, Russia, to effectively protect themselves from harmful sun exposure. As the climate here falls under the Dfb category, typical weather patterns can lead to varying UV levels, peaking around midday with indices reaching as high as 7. By being aware of these levels, you can prevent sunburn and promote better skin health for yourself and your loved ones. With Trosna’s sun exposure risks, especially during the warmer months, knowing when to seek shade and apply sunscreen is essential for staying safe under the sun.
The UV Index (UVI) rises significantly as the day progresses, peaking at a maximum of 7 during the midday hours. From early morning, the UVI starts at a gentle 1 at 07:00, gradually increasing to 2 by 08:00. By 09:00, it climbs to 4, indicating a moderate level of UV exposure. The index reaches its pinnacle at 12:00, hitting 7 and remaining constant until 14:00, making this the optimal time for sun safety precautions. As the afternoon wanes, the index gradually declines, dropping to 5 by 15:00, followed by 4 at 16:00, and tapering off to a 2 by 18:00. Finally, the evening brings the UVI back down to a safe 1 by 19:00, allowing for a comfortable close to the day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV Index levels fluctuate significantly, affecting exposure risk for visitors and residents. The high-risk months typically fall between April and September, featuring peak UV Index levels of 6 to 8, with June marking the highest at 8, where burn time reduces to just 15 minutes. In contrast, the winter months of December and January present low risk, with UV Index values at 1 and 2, translating to burn times of 45 minutes. To mitigate the risks, individuals are advised to take precautions during spring and summer, such as seeking shade, wearing protective clothing, and applying sunscreen, while enjoying outdoor activities safely during these high UV Index periods.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Saint Petersburg UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Nizhniy Novgorod UVI | 1 | 2 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |
| Yekaterinburg UVI | 1 | 2 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |
| Moscow UVI | 1 | 2 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |
| Novosibirsk UVI | 1 | 2 | 4 | 5 | 7 | 7 | 6 | 6 | 5 | 3 | 1 | 1 |
| Trosna | 2 | 2 | 4 | 6 | 7 | 8 | 7 | 7 | 6 | 3 | 2 | 1 |