Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Vanderhoof, Canada, as it highlights the intensity of ultraviolet radiation from the sun—a key factor in preventing sunburn and protecting overall skin health. With a Dfc climate characterized by cold, snowy winters and warm summers, Vanderhoof experiences varying UV exposure levels throughout the year. Knowledge of daily UV levels, which can peak at 7 between noon and 1 PM, empowers individuals to take necessary precautions against harmful effects, such as skin damage and increased cancer risk. Stay informed and safeguard your health by keeping an eye on the UV Index in Vanderhoof!
As the sun rises, the UV Index (UVI) begins its ascent, starting with a mild level of 1 at 7:00 AM. By 9:00 AM, it reaches a level 3, indicating an increase in solar intensity. The real peak occurs at noon when the UVI hits a robust 7, representing the highest risk for harm from unprotected sun exposure. This high intensity persists until 3:00 PM, when it gradually recedes to a level of 6. As the afternoon wanes, the UVI dips further, dropping to 5 at 4 PM and finally back to a gentle 1 by 7 PM, allowing for a safe and comfortable evening. Remember, the hours between 10 AM and 3 PM mark the most crucial times for sun safety!
| 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 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index reflects notable seasonal changes in sun exposure, peaking during the summer months. January and February see low UV levels (Index 1-2), allowing for extended safe exposure times of 45 minutes. As spring approaches, the index rises to moderate levels (Index 4-5) in March and April, reducing burn times to 30 minutes. The risk escalates in May and June with a high UV Index of 7, leading to a burn time of just 25 minutes. The very high UV levels (Index 8) in July and August necessitate caution, as skin can burn in as little as 15 minutes. As fall sets in, the index drops to high (Index 6) in September, before returning to moderate (Index 4) in October, allowing for a burn time of 30 minutes. The year ends with low UV exposure in November and December, permitting safe exposure for 45 minutes. Visitors and residents are advised to take extra precautions during July and August with appropriate sun protection measures, including sunscreen, protective clothing, and seeking shade during peak hours, to minimize risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vanderhoof | 1 | 2 | 4 | 5 | 7 | 7 | 8 | 8 | 6 | 4 | 1 | 1 |
| Edmonton UVI | 2 | 3 | 5 | 6 | 7 | 7 | 8 | 7 | 6 | 4 | 2 | 1 |
| Calgary UVI | 2 | 3 | 4 | 6 | 8 | 8 | 9 | 8 | 7 | 4 | 2 | 1 |
| Montreal UVI | 2 | 4 | 5 | 7 | 9 | 9 | 8 | 8 | 7 | 5 | 3 | 2 |
| Ottawa UVI | 2 | 4 | 5 | 8 | 9 | 9 | 8 | 8 | 7 | 5 | 3 | 2 |
| Toronto UVI | 2 | 4 | 5 | 8 | 9 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |