Last updated: May 3, 2025
Understanding the UV Index in Oakville, United States, is crucial for protecting your skin and overall health. This region experiences a Cfa climate, which means residents enjoy warm summers but also face notable sun exposure risks. The UV Index can reach as high as 10 around midday, making it essential to be aware of daily UV levels to prevent sunburn and reduce long-term skin damage. By staying informed about these levels, Oakville residents can take the necessary precautions, ensuring that their outdoor activities are both enjoyable and safe.
The UV Index throughout the day showcases a dynamic pattern of sun exposure, peaking during the afternoon. At 07:00, the index starts low at 1, gradually increasing as the sun rises. By 10:00, it reaches 6, signaling a rise in sun intensity, culminating in a striking 10 from 12:00 to 13:00, indicating a high risk of harm from unprotected sun exposure. As the day progresses, the UV Index declines, dropping to 3 by 17:00, and steadily returning to 1 by 19:00. This data highlights the importance of sun protection, especially during midday when the UV Index is at its highest.
| 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 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Seasonal changes in the UV Index illustrate a notable increase in sun exposure risk from late winter through summer. January and December feature a moderate UV Index of 3, allowing for 30 minutes of potential sun exposure without burning, while February slightly rises to 5. The risk escalates significantly from March (UV Index 7) to April (UV Index 9) as the burn time decreases to 25 and 15 minutes, respectively. The peak occurs in June with an extreme index of 11, significantly lowering the burn time to just 10 minutes, marking it as a month of high concern. July, August, and September maintain a very high index of 10 and 9, suggesting that residents and visitors should take extra precautions, including wearing sunscreen and protective clothing, during these months. As temperatures cool down in October (7) and November (5), the risk subsides to high and moderate levels again, offering a slight respite. Overall, it is crucial for everyone to remain vigilant about UV exposure, especially during the high-risk months of April to September.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chicago UVI | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
| Brooklyn UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| New York City UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| Oakville | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 5 | 3 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |