Last updated: June 2, 2025
In South Williamson, United States, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding UV levels is essential not only for preventing painful sunburns but also for reducing long-term risks of skin damage and cancer. With a Cfa climate that often brings varying UV exposure, residents face significant risks, especially during peak hours when the UV Index can soar to 10 around midday. By keeping an eye on the UV Index, you can enjoy the sun safely while taking necessary precautions to safeguard your skin.
The UV Index chart reveals a dynamic daily pattern of solar intensity. Starting early in the day, the UV Index remains low, peaking at 1 by 08:00. However, as the sun reaches its zenith, the index surges dramatically—hitting 7 by 11:00 and soaring to a maximum of 10 between 13:00 and 14:00. This signals a critical window for sun exposure, where protection is essential. As the afternoon progresses, the UV levels begin to decline, dropping to 4 by 17:00, before tapering off to 1 again by evening. To stay safe, it's vital to be cautious during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index demonstrates significant seasonal variation, peaking during the summer months. January and December see a moderate UV Index of 3, allowing for a burn time of 30 minutes. However, by February, the UV risk escalates to high with an index of 6, and this trend continues through March (UV Index 7) and April (UV Index 9), which are also considered high-risk months. The months of May to September present the highest UV exposure, with a very high index of 10 in May, June, and August, and an extreme rating of 11 in July, where the burn time shortens to just 10 minutes. October begins to see a reduction with a high UV Index of 7, followed by a moderate index of 5 in November. Given these fluctuations, it is advisable for both visitors and residents to take necessary sun protection measures, particularly from late spring through early fall, when UV exposure is most intense. Wearing protective clothing, applying sunscreen, and seeking shade during peak hours can help mitigate the risks associated with high UV exposure.
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 |
| South Williamson | 3 | 6 | 7 | 9 | 10 | 10 | 11 | 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 |