Last updated: June 2, 2025
In Prairie du Sac, staying informed about the UV Index is essential for safeguarding your skin health under the sun. With peak UV levels frequently reaching 10 during midday, awareness of these fluctuations can help you take proactive steps to prevent sunburn and reduce your risk of long-term skin damage. The humid continental climate of Prairie du Sac means residents can encounter intense UV exposure, especially in the summer months. By understanding the local UV levels, you can enjoy the outdoors safely while protecting your skin.
The UV index on this particular day presents a notable trend as the sun rises and peaks. Starting at 07:00, the index is a gentle 1, gradually climbing to 2 by 08:00. The ascent continues as it reaches 4 at 09:00 and hits 6 by 10:00. Midday shines brightest, with the index soaring to a maximum of 10 at both 12:00 and 13:00, indicating a high potential for skin damage without protection. As the day progresses, values begin to dip, falling to 9 at 14:00, and then decreasing further to 8 at 15:00. By 16:00, the UV index drops to 6, and as evening approaches, it relaxes to 3 at 17:00, down to 2 by 18:00, and finally retreating to 1 at 19:00. It's a day that emphasizes the importance of sun protection during the peak hours!
| 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 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index shows significant seasonal changes that impact sun safety for residents and visitors. From April to September, the UV Index peaks, reaching levels as high as 10 in the summer months of June and July. This indicates a very high exposure category, with a reduced burn time of only 15 minutes during these months. Conversely, during the winter months of December through February, the UV Index is considerably lower, ranging from 2 to 4, with a burn time of 30 to 45 minutes. Therefore, visitors and residents should be especially cautious during the high-risk months of April to September, and take appropriate protective measures, such as wearing sunscreen, protective clothing, and seeking shade, to minimize their risk of UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Prairie du Sac | 3 | 4 | 5 | 8 | 9 | 10 | 10 | 9 | 8 | 5 | 3 | 2 |
| 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 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |