Last updated: May 3, 2025
Understanding the UV Index is essential for residents of Oakley, United States, where exposure to harmful ultraviolet rays can significantly impact your health. With peak UV levels reaching up to 12 around noon, it's crucial to be aware of these measures to prevent sunburn and reduce long-term skin damage. Oakley's climate, categorized as Dfb, presents varying challenges throughout the year, but the summer months often bring increased exposure risks. By staying informed about the UV Index, you can protect your skin and enjoy the sunny days safely!
At dawn, the UV Index starts at a mild 1 at 07:00, gradually climbing to 2 by 08:00. As the sun rises higher, it reaches 4 at 09:00 and skyrockets to 6 by 10:00. The intensity peaks at 11:00 with a strong 9, followed by an even more intense 11 at noon. The UV rays continue to surge, hitting a maximum of 12 at 13:00 and again at 14:00. A gradual decline begins in the afternoon, dropping to 10 at 15:00 and further down to 7 by 16:00. As evening approaches, the index tapers off, settling at 5 at 17:00, 3 at 18:00, and finally retreating back to a safe 1 by 19:00. Be sure to take precautions during those peak hours when the UV Index reaches its zenith!
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 | 9 | very high | 15 min |
12:00 | 11 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 12 | extreme | 10 min |
15:00 | 10 | very high | 15 min |
16:00 | 7 | high | 25 min |
17:00 | 5 | moderate | 30 min |
18:00 | 3 | moderate | 30 min |
19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal changes, with the highest levels typically occurring from April to August. During this period, the UV Index peaks at 12, indicating an extreme risk of harm from unprotected sun exposure, with a critical burn time of only 10 minutes. Consequently, March and September also represent high-risk months, with UV Index readings of 8 and 10, respectively, necessitating increased caution. As such, visitors and residents should prioritize sun protection strategies during these months—such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours. Conversely, the winter months, particularly January, November, and December, feature lower UV levels categorized as moderate, allowing for relatively safer sun exposure, albeit still with care.
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 |
Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
Oakley | 4 | 6 | 8 | 11 | 12 | 12 | 12 | 11 | 10 | 7 | 5 | 3 |
Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |