Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Hudson Bay, Canada, where the unique climate can expose individuals to varying levels of ultraviolet radiation. Knowing the UV levels helps in preventing sunburn and protecting skin health, especially during the warmer months when the index can peak as high as 8 around midday. With Hudson Bay's Dfc climate, characterized by cold and cool summers, the risk of UV exposure can be underestimated, making it essential to stay informed and safe. Embrace the beauty of Hudson Bay while keeping skin safety a top priority!
The UV Index throughout the day showcases a dynamic range of exposure, beginning at a low 1 at 7:00 AM and gradually climbing to a peak of 8 between 12:00 PM and 1:00 PM. This signifies a critical window for sun protection, particularly around 11:00 AM and 12:00 PM when the index reaches 7 and 8, respectively. As the afternoon unfolds, the index gradually declines, dipping back to 6 by 3:00 PM and then further to 4 at 4:00 PM. By the evening, the UV intensity has diminished to a gentle 1 at 7:00 PM. It's essential to stay aware of these fluctuations, ensuring that sun safety measures are taken during peak hours!
| 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 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | 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 significantly throughout the year, indicating seasonal changes in UV exposure. January and December see low UV levels (Index 1), providing a safer environment for outdoor activities, with burn times of 45 minutes. As the year progresses, UV levels begin to rise, with February and March categorizing as moderate (Index 3 and 4), where burn times reduce to 30 minutes. The risk escalates in late spring and summer, peaking in June and July with a very high UV Index (8) and a significantly shorter burn time of just 15 minutes. The months of April and May also fall under the high category (Index 6 and 7), with burn times of 25 minutes. August and September see a slight decrease but remain high, before dropping back to moderate levels in October. To safeguard against UV exposure, it is crucial for visitors and residents to take precautions, especially during high-risk months from April to August, ensuring regular application of sunscreen, wearing protective clothing, and seeking shade during peak sun hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Edmonton UVI | 2 | 3 | 5 | 6 | 7 | 7 | 8 | 7 | 6 | 4 | 2 | 1 |
| Hudson Bay | 1 | 3 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 3 | 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 |