Last updated: July 2, 2025
In Walker, United States, being aware of the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels helps residents prevent sunburn and reduce the risk of long-term skin damage, particularly during peak hours when the index soars. With a climate characterized by mild summers and cooler winters, Walker experiences varying UV exposure throughout the year. On sunny days, especially around midday, UV levels can reach a maximum of 13, prompting the need for effective sun protection strategies to keep you and your loved ones safe. Stay informed and enjoy the outdoors responsibly!
The UV Index displays a dynamic pattern throughout the day, starting off with a mild 1 at 07:00 and gradually climbing as the sun rises. By 09:00, it reaches a moderate level of 5, but the sun really starts to shine by 11:00, peaking at an intense 12. The apex is reached at 13:00 with an impressive 13, indicating it’s crucial to take sun safety precautions. As the afternoon progresses, the index begins to decline, dropping back to 10 by 15:00 and continuing to cool down into the evening, finally settling back to 1 by 19:00. It’s a vivid reminder of how important it is to stay protected during the peak sun hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 10 | 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, UV levels exhibit significant seasonal variation, peaking during the summer months. High-risk months for sun exposure are March through August, where the UV Index reaches very high to extreme levels, particularly in April, May, June, and July, with a consistent index of 13 and a burn time of just 10 minutes. Residents and visitors should be especially vigilant during these months, taking precautions such as wearing protective clothing, using broad-spectrum sunscreen, and seeking shade whenever possible. As fall approaches, the UV Index gradually decreases, but visitors should remain cautious in September and October when levels still indicate a high risk. In contrast, January, December, and November are periods of lower UV exposure, categorized as moderate to high, allowing for somewhat safer outdoor activities.
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 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
| Walker | 4 | 6 | 10 | 12 | 13 | 13 | 13 | 12 | 10 | 7 | 6 | 4 |