Last updated: July 2, 2025
Awareness of the UV Index is crucial for residents of Wembley, Canada, especially when enjoying the outdoors. Understanding UV levels not only helps in preventing sunburn but also plays a significant role in maintaining long-term skin health. With Wembley’s Dfc climate, which features distinct seasonal changes, it's essential to recognize that UV exposure can be unexpectedly high, particularly during peak hours when the UV Index reaches levels of 6 and 7. Stay informed and protected to enjoy the beautiful Canadian sun safely!
The UV Index throughout the day follows a characteristic upward trend, starting from a gentle 1 at 07:00 and gradually climbing to a peak of 7 between 13:00 and 15:00. This period of intensity signifies the highest level of UV exposure, making midday the most crucial time for sun protection. As the sun begins to dip, the UV Index decreases to 6 by 16:00, then gradually falls back to 2 by 19:00. For those planning outdoor activities, it's essential to stay vigilant, especially during the hours when the UV Index is at its highest; enjoy the sunshine, but don’t forget the sunscreen!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal changes, indicating varying levels of sun exposure risk. The high-risk months for UV exposure are from April to September, where the index peaks between 6 and 7, corresponding to a high exposure category and a burn time of just 25 minutes. Visitors and residents are advised to take precautionary measures during this period, such as wearing sunscreen, protective clothing, and seeking shade during peak hours. Conversely, the winter months of January, February, November, and December show a low UV index of 1, allowing for more extended sun exposure with a burn time of 45 minutes. As UV levels fluctuate, it's essential to stay informed and protect your skin, particularly during the highest-risk months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wembley | 1 | 2 | 3 | 6 | 7 | 7 | 7 | 7 | 6 | 3 | 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 |