Last updated: July 2, 2025
Understanding the UV Index in Twisp, United States is essential for safeguarding your skin health and preventing sunburn. With the region's Dsb climate often bringing clear skies and intense sunlight, knowing the daily UV levels can make a significant difference in your sun protection efforts. The UV Index ranges from low to high throughout the day, peaking around noon, when levels reach as high as 9, highlighting the importance of taking precautions during those hours. Stay informed and protect yourself against the harmful effects of UV exposure while enjoying the beautiful outdoors in Twisp!
The UV Index for the day begins low at 1 by 7:00 AM, gradually rising as the sun climbs higher in the sky. By 9:00 AM, it reaches 4, marking a noticeable increase. The intensity peaks at 12:00 PM with a scorching 9, maintaining this high level until 14:00 PM. As the afternoon progresses, the index dips to 7 at 15:00 PM, and then continues its descent to 4 by 17:00 PM. The sun’s waning effects are apparent by the evening, with the UV Index dropping to 1 by 19:00 PM. This day highlights the importance of sun protection during peak hours when the index hits its maximum.
| 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 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | 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 |
Throughout the year, UV Index levels vary significantly, indicating changing sun exposure risks. The months of May through August are particularly notable, as they experience a very high UV Index of 9, with a burn time of only 15 minutes—marking them as high-risk months for sunburn. In contrast, the winter months of January and December show a low UV Index of 2, allowing up to 45 minutes of exposure with minimal risk. As spring transitions into summer, it's vital for both visitors and residents to take precautions during the high-risk months: wear sunscreen, seek shade during peak hours, and consider protective clothing to reduce UV exposure. As the season shifts into fall and winter, the risk decreases, but staying informed remains essential year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Twisp | 2 | 4 | 6 | 7 | 9 | 9 | 9 | 9 | 7 | 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 |