Last updated: May 3, 2025
In Clarksville, United States, understanding the UV Index is essential for protecting your skin and overall health. The UV Index reflects the strength of ultraviolet radiation from the sun, guiding residents in safeguarding against sunburn and long-term skin issues. With a Cfa climate characterized by hot summers, Clarksville typically experiences heightened UV levels, peaking at 11 around noon. Being aware of these levels not only helps you plan outdoor activities but also emphasizes the importance of sunscreen, protective clothing, and seeking shade during the most intense hours. Stay informed and enjoy the sun safely!
At 07:00, the UV Index begins its climb with a modest level of 1. By 08:00, it doubles to 2, signaling the start of a gradual increase in solar intensity. As the sun rises higher, the index swiftly escalates to 4 by 09:00 and reaches a brisk 7 at 10:00. The peak occurs at 12:00, hitting a notable 10, and it continues to soar, reaching its maximum of 11 by 13:00. After this midday peak, the UV Index begins to decline, dropping to 9 at 14:00 and gradually decreasing to 7 by 15:00. As the afternoon progresses, it further retreats to 5 at 16:00 and falls to 3 by 17:00, finally settling back to 1 at 18:00 and 19:00. This prompts a reminder to take essential sun protection during the day, especially when the 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
During the year, UV Index levels exhibit notable seasonal changes, with the highest risk months occurring from April to August. April and May both feature a very high UV Index of 10, while June and July reach an extreme level of 11, necessitating vigilant sun protection. The burn time decreases significantly during these months, dropping to just 10 minutes in June and July. Conversely, UV levels are moderate in January, November, and December, allowing for longer burn times of 30 minutes. Residents and visitors are advised to take precautions, especially during high-risk months, by seeking shade, wearing protective clothing, and applying sunscreen regularly to minimize the risk of overexposure. Awareness of these UV changes is crucial for maintaining skin health throughout the year.
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 |
| Clarksville | 3 | 6 | 7 | 10 | 10 | 11 | 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 |