Last updated: August 1, 2025
In St-Jean-Port-Joli, Canada, staying informed about the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels helps residents and visitors alike take proactive measures against sunburn and long-term skin damage, particularly during the peak hours of solar exposure. With a Dfb climate that showcases warm summers, the UV Index can reach dangerously high levels; peaking at 8 around midday when sun safety is paramount. Be mindful of your UV exposure and enjoy the beautiful outdoor activities this charming town has to offer while keeping your skin protected!
Starting early in the morning, the UV Index begins at a mild 1 at 07:00, gradually rising through the hours. By 09:00, it reaches 4, marking the onset of stronger sunlight. The intensity peaks between 11:00 and 13:00, with a robust 8, indicating a high risk of harm from unprotected sun exposure. From there, it starts to gradually decline, dipping to 6 by 15:00 and falling further to 4 at 16:00. As the sun begins to set, the index decreases significantly, dropping back to 1 by 18:00 and maintaining that lower level until evening. This day’s UV trends serve as a reminder to protect your skin during peak hours, especially when the index is at its highest.
| 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 | 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 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences notable changes, with high-risk months primarily occurring from April to August. The UV Index peaks at 9 during May and June, indicating a very high exposure category, with a burn time of only 15 minutes. As the sun strengthens in March (UV Index 5) and peaks in late spring and summer, residents and visitors should take extra precautions during these months by wearing protective clothing, using sunscreen, and seeking shade to prevent skin damage. In contrast, the UV Index is at its lowest in January (UV Index 2) and December (UV Index 1), when exposure risk is considered low. During these months, individuals have a longer burn time of 45 minutes but should remain vigilant as UV rays can still be harmful. Understanding these seasonal UV changes is essential for maintaining skin health year-round.
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 |
| Calgary UVI | 2 | 3 | 4 | 6 | 8 | 8 | 9 | 8 | 7 | 4 | 2 | 1 |
| St-Jean-Port-Joli | 2 | 3 | 5 | 7 | 9 | 9 | 8 | 8 | 6 | 5 | 3 | 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 |