Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Sisters, United States, where the sun's rays can be surprisingly intense, especially during the peak hours of the day. Being aware of UV levels helps prevent sunburn and protects skin health, allowing you to enjoy the beautiful high desert climate without the risks associated with overexposure. With Sisters typically experiencing elevated UV exposure, particularly between 11 AM and 3 PM when the index can reach a maximum of 10, it’s essential to stay informed and take appropriate precautions. Whether you’re hiking the stunning trails or relaxing outdoors, knowing the UV Index can help ensure your time in the sun is both enjoyable and safe.
Today's UV Index presents an intriguing curve, starting the day with a mellow maximum of 1 at 07:00. As the sun climbs higher, things heat up quickly—by 10:00, the index reaches 6, and by 12:00, it peaks at an intense 10. This level remains steady until 14:00, urging sun enthusiasts to take precautions. As the afternoon fades, the UV Index gracefully tapers off, dropping to 4 by 17:00, and finally sinking back to a gentle 1 by 19:00. With mid-day UV levels soaring, it’s crucial to stay protected during those 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 | 10 | very high | 15 min |
15:00 | 8 | very high | 15 min |
16:00 | 6 | high | 25 min |
17:00 | 4 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 1 | low | 45 min |
Throughout the year, the UV Index reveals notable seasonal variations, indicating periods of higher risk for sun exposure. From March to September, particularly in May, when the UV index reaches an extreme value of 11, residents and visitors should exercise caution. April and June also present significant risks with very high indices of 8 and 10, respectively, suggesting burn times as short as 10–15 minutes. In contrast, the months of January and February have moderate UV levels with longer burn times of 30 minutes, while November and December show a marked decline in UV exposure. As summer months approach, it is imperative to seek shade, wear protective clothing, and apply sunscreen generously to minimize skin damage during high-risk months.
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 |
Sisters | 3 | 4 | 6 | 8 | 11 | 10 | 10 | 9 | 8 | 6 | 3 | 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 |