Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of St-Jean-Port-Joli, Canada, where the climate can lead to significant sun exposure, especially during the summer months. Monitoring UV levels is essential for effective sunburn prevention and long-term skin health, as high exposure can increase the risk of skin damage. With typical UV peaks reaching a level of 9 during the afternoon, it’s important to stay informed about daily UV trends to enjoy the beautiful outdoors safely. Be mindful of the sun, wear protective clothing, and remember that even on cloudy days, harmful UV rays can still impact your skin in this charming location.
The UV Index throughout the day paints a clear picture of the sun's intensity. Early morning starts gently at 1 around 07:00, but as the day progresses, the UV levels rise sharply, peaking at a robust 9 between 13:00 and 14:00. This midday surge emphasizes the importance of sun protection during the sunniest hours. By 15:00, the index begins to decline, settling down to 6, then tapering off to 3 by 17:00, and finally returning to a more manageable 1 as the sun sets. Whether you're planning outdoor activities or seeking shade, it's crucial to stay aware of the UV levels throughout the day!
| 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 | 6 | high | 25 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 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 |