Last updated: July 2, 2025
Understanding the UV Index is essential for residents of Fredericton, Canada, as it provides valuable information about the sun's strength and associated risks. Awareness of UV levels helps prevent sunburn, protects skin health, and informs outdoor activities. With Fredericton's Dfb climate, the city's residents experience varying UV exposure throughout the year. During peak hours, particularly from late morning to early afternoon, UV indices can reach levels of 8, signaling a heightened risk for skin damage. Stay informed and protect your skin with knowledge of the daily UV Index!
The UV Index offers a clear snapshot of sun intensity throughout the day. From 07:00 to 09:00, it's a comfortable level, hovering around 1 to 2, making it safe for morning outdoor activities. As the sun climbs higher, the index jumps to 4 by 10:00 and peaks at an impressive 8 between 13:00 and 14:00—the time to take extra precautions! After the zenith, the levels gradually decline to 5 by 16:00, and then descend to a cozy 1 by 19:00. Plan accordingly and enjoy the sun safely!
| 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the UV levels, significantly impacting exposure risks for residents and visitors. January and December feature low UV indexes (2), allowing for extended safe exposure times of up to 45 minutes. By February and March, the UV index rises to moderate levels (3 and 5), reducing burn time to 30 minutes. The transition to April sees a notable increase to a high UV index of 7, further shortening safe exposure time to 25 minutes. The peak months for UV exposure occur from May to August, where the index reaches very high levels (8 and 9), drastically limiting safe sun exposure to just 15 minutes. September marks a slight decline with a high index of 7, while October and November revert to moderate levels (5 and 3) with 30 minutes of safe exposure. To safeguard against harmful UV rays, it is crucial for individuals to be particularly cautious during the high-risk months of April to August, using sunscreen, wearing protective clothing, and seeking shade whenever possible.
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 |
| Fredericton | 2 | 3 | 5 | 7 | 8 | 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 |