Last updated: August 1, 2025
Understanding the UV Index is crucial for residents of Saint-Jerome, Canada, especially during the summer months when UV exposure can pose significant risks to skin health. The UV Index serves as a reliable guide to help you gauge the intensity of harmful ultraviolet rays, allowing you to take proactive measures against sunburn and long-term skin damage. With a Dfb climate, Saint-Jerome experiences a range of weather conditions, but during sunny days, UV levels can soar to 8 around midday, indicating that even short outdoor activities can lead to increased skin risk. Stay informed and protect yourself by monitoring the UV Index to enjoy sunny days safely!
The UV Index throughout the day presents a clear and vigorous pattern of intensity. As the sun rises at 07:00, the index starts at a gentle 1, indicating minimal risk. By 08:00, it climbs to 2, still in the low range, but things escalate quickly; by 09:00, it reaches 3. The sun's power peaks astonishingly at 12:00, hitting a maximum of 8, which signifies a high risk for unprotected skin. This intense exposure persists until 14:00, before gradually tapering off through the afternoon. By 15:00, the index drops to 7, then diminishes further to 5 at 16:00, and continues to decline into the evening hours, settling back down to 1 by 19:00. Those planning outdoor activities during the midday hours should take care to protect themselves from the sun’s powerful rays!
| 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 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index demonstrates notable seasonal changes, with higher values typically occurring during the late spring and summer months. From April through August, UV levels peak, particularly in May and June, where the index reaches 9, indicating a very high risk of harm from unprotected sun exposure and a burn time of just 15 minutes. July and August maintain UV levels of 8, also classified as very high. High-risk months are particularly concentrated from April to September, where residents and visitors are advised to take protective measures, such as wearing sunscreen, protective clothing, and seeking shade during the peak sun hours. Conversely, winter months such as January and December present a much lower risk, with a UV Index of 2 and low exposure category, allowing for more time outdoors without significant risk. It's crucial for everyone to stay informed on local UV levels and adjust sun safety practices accordingly, particularly during the high exposure months.
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 |
| Saint-Jerome | 2 | 4 | 5 | 7 | 9 | 9 | 8 | 8 | 7 | 5 | 3 | 2 |
| 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 |