Last updated: May 3, 2025
Understanding the UV Index in Westlake, Canada is essential for everyone looking to protect their skin and overall health from harmful UV radiation. With a climate classified as Dfc, residents face varying levels of UV exposure throughout the day, peaking around midday. Being aware of UV levels can help you prevent sunburn and long-term skin damage, ensuring that you enjoy the sunny days safely. With UV Index values reaching a high of 7 in the afternoon, it's crucial to take protective measures during peak hours to enjoy Westlake's beautiful outdoors without compromising your health.
As the day unfolds, the UV Index climbs steadily, peaking at 7 between 2:00 PM and 3:00 PM. Starting from a low of 1 at 7:00 AM and 8:00 AM, the intensity gradually increases, reaching 3 by 10:00 AM. By noon, the index hits 6, indicating a notable risk of harm from unprotected sun exposure. It's during the mid-afternoon, around 1:00 PM and 2:00 PM, that sun safety becomes paramount, as the UV Index remains at its highest, 7. After this peak, the values begin to taper off, dropping to 5 at 4:00 PM and 4 at 5:00 PM, before declining further into the evening. Remember to protect your skin during those peak hours for a safe and enjoyable day outdoors!
| 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 | 4 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV radiation levels show significant seasonal variation. The high-risk months for UV exposure are from May to July, peaking in July with a UV Index of 8, indicating a very high risk of harm from unprotected sun exposure and a burn time of just 15 minutes. Visitors and residents during these months should take precautions such as wearing sunscreen, protective clothing, and seeking shade. As summer transitions to fall, the UV Index gradually decreases, moving to moderate levels by October and returning to low during the winter months of January, November, and December. Thus, it is essential to stay vigilant about UV exposure, especially between late spring and summer, to protect your skin and overall health.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Westlake | 1 | 2 | 3 | 5 | 7 | 7 | 8 | 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 |