Last updated: May 3, 2025
Understanding the UV Index in Mayo, Canada, is essential for everyone, especially for those who enjoy the great outdoors. The UV Index provides a clear indication of the sun's intensity, allowing residents and visitors to take necessary precautions against sunburn and long-term skin damage. With Mayo's Dsc climate, which experiences varying levels of UV exposure throughout the day, awareness of these UV levels becomes even more crucial, particularly during peak hours when the index can reach as high as 5. By staying informed and taking proactive sun safety measures, you can protect your skin and enjoy the beauty of Mayo’s natural landscape safely.
The UV Index throughout the day unfolds a clear narrative of rising sun intensity. Starting gently at 1 during the early hours of 7:00 AM and 8:00 AM, the index gradually climbs, reaching a moderate 2 by 9:00 AM. As the clock strikes 10:00 AM, the index surges to 3, signaling a shift towards more potent rays. The peak occurs between 11:00 AM and 2:00 PM, where it holds steady at 4 and culminates at a robust 5 from 13:00 to 15:00, highlighting the need for sun protection during these hours. The afternoon sees a slight decline with the index returning to 4 from 16:00, and subsequently easing to 3 by 17:00 and 18:00, before tapering off to 2 at 19:00. Staying vigilant against UV exposure is crucial, particularly during its peak hours!
| 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 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 4 | moderate | 30 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Seasonal variations in UV Index indicate a notable increase from the low levels in January and February (UV Index 1) to more hazardous levels in June and July (UV Index 6), where the burn time decreases to just 25 minutes. The UV Index reaches moderate levels in March through May (UV Index 3-5) and dips back to low levels from October to December. The high-risk months for UV exposure are clearly June and July, when direct sunlight can cause skin damage within 25 minutes. Residents and visitors should take precautions during these months by wearing protective clothing, applying sunscreen, and limiting sun exposure during peak hours to reduce the risk of UV-related health issues.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mayo | 1 | 1 | 3 | 4 | 5 | 6 | 6 | 5 | 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 |