Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Walhalla, United States, as it serves as a vital tool in safeguarding skin health and preventing sunburn. The UV levels in this region, influenced by a Dfb climate—characterized by warm summers and cold winters—can vary significantly throughout the day. For instance, during the peak hours of 12 PM to 2 PM, the UV Index can reach as high as 8, indicating a very high risk of harm from unprotected sun exposure. By staying informed about these levels, residents can take proactive measures to shield themselves from harmful UV radiation, ensuring a healthier and more enjoyable outdoor experience.
As the sun rises, the UV Index starts off low at 1 by 7:00 AM, perfect for a leisurely morning stroll. However, as the day progresses, intensity increases dramatically. By 9:00 AM, it climbs to 3, and by 11:00 AM, it reaches 6, signaling the need for sun protection. The peak comes at 1:00 PM where the UV Index hits a high of 8, remaining intense until 2:00 PM. Afterward, it gradually declines to 5 by 4:00 PM, and further drops to 1 by 7:00 PM. Keep an eye on the UV levels to enjoy the sun safely throughout the day!
| 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so too does the UV Index, reflecting varying levels of sun exposure risk throughout the year. From January to March, the UV Index remains relatively low to moderate, with maximum burn times of 45 minutes in January decreasing to 30 minutes by March. April marks the start of higher exposure levels with an index hitting 7, leading into the peak summer months of May through August, where the UV Index reaches its highest at 9 in June and remains at 8 in July and August, necessitating a burn time of only 15 minutes. September sees a slight decrease back to a high of 7, while October returns to a moderate level with a 4. The year wraps up with lower risk months in November and December, where the burn time extends to 45 minutes. It’s crucial for visitors and residents to take protective measures during high-risk months—particularly from April to September—by wearing sunscreen, protective clothing, and limiting sun exposure during peak hours to safeguard against harmful UV rays.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Walhalla | 2 | 4 | 4 | 7 | 8 | 9 | 8 | 8 | 7 | 4 | 2 | 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 |