Last updated: June 2, 2025
Understanding the UV Index in Ust'-Ilimsk, Russian Federation is essential for protecting your skin against harmful ultraviolet rays. High UV levels can lead to sunburn and long-term skin health issues, making awareness imperative, especially during peak hours. With a Dfc climate, Ust'-Ilimsk experiences a range of UV exposure risks throughout the day, peaking at a moderate index of 7 during midday. Knowing when to seek shade or apply sunscreen can make all the difference in enjoying the sunny days safely while embracing the beauty of this unique region.
As the day unfolds, the UV Index rises steadily, peaking at 7 around 1 PM, signaling the strongest sun exposure. Early risers will notice a gentle start, with 1 at 7 AM, gradually escalating to 2 by 8 AM. By 10 AM, the index reaches 4, and by noon, it hits a moderate 6—a clear reminder to apply sunscreen. The heat is felt most intensely between noon and 1 PM, as the UV levels peak. After this zenith, the index begins to decline, dropping back to 4 by 4 PM before tapering to 1 by 7 PM. Overall, it's a day where sun safety is paramount, especially during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 6 | high | 25 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 |
The UV Index varies seasonally, indicating changing levels of sun exposure risks throughout the year. January and February typically have a low UV Index of 1-2, allowing for longer safe exposure times of 45 minutes. As spring approaches, March sees an increase to a moderate UV Index of 4, warning residents and visitors to limit exposure to 30 minutes. This moderate risk continues through April and May, where UV levels remain at 5. The summer months from June to August pose a higher risk, with UV Index values peaking at 7 in June and reaching 6 in July and August, necessitating careful monitoring of sun exposure with limited burn times to 25 minutes. In September, the UV Index decreases to 4, followed by 3 in October, both categorized as moderate. Finally, November and December return to a low UV Index of 1, allowing for the safest exposure time of 45 minutes. Residents and visitors are advised to adjust their sun protection measures accordingly, particularly during the high-risk months of June, July, and August, to minimize the risk of sunburn and long-term skin damage.
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 |
| Ust'-Ilimsk | 1 | 2 | 4 | 5 | 5 | 7 | 6 | 6 | 4 | 3 | 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 |