Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Churchill, Canada, where outdoor activities abound year-round, especially during the bright summer months. With the cool, humid continental climate typical of this region, being aware of UV levels can significantly reduce the risk of sunburn and long-term skin health issues. During peak hours, the UV Index can reach levels as high as 9, emphasizing the need for protective measures against harmful solar radiation. Whether you're exploring the stunning tundra or enjoying local wildlife, staying informed about UV exposure is key to a safe and enjoyable experience in this unique and beautiful environment.
The UV Index data reveals a dynamic shift throughout the day, showcasing peak sunlight intensity. Starting at a gentle 1 at 7:00 AM, the index climbs steadily, hitting 2 by 8:00 AM. As the sun rises higher, it reaches its zenith at 1:00 PM with an impressive 9. The index then starts its descent, dropping to 8 by 2:00 PM, before tapering off to 6 at 4:00 PM and winding down to 1 by 7:00 PM. This highlights the importance of sun safety during the midday hours when UV exposure is at its highest, particularly between 11:00 AM and 1:00 PM. Be sure to take precautions during these peak UV times to protect your skin!
| 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 | 5 | moderate | 30 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 | 7 | high | 25 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV Index levels exhibit significant seasonal variations, with high-risk months primarily occurring from April to August. During this period, the UV Index reaches its peak, particularly in May and June with values of 8 and 9, indicating very high exposure categories and necessitating a burn time of only 15 minutes. Conversely, the months of January, February, October, November, and December present a low risk of UV exposure, with burn times up to 45 minutes. It is advisable for visitors and residents to take precautions during the high-risk months, such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours, particularly when the UV Index is at or above 6. By remaining vigilant and informed, individuals can enjoy their outdoor activities safely year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Churchill | 1 | 2 | 3 | 6 | 8 | 9 | 7 | 6 | 4 | 2 | 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 |