Last updated: August 1, 2025
In Sterling, United States, being aware of the UV Index is crucial for protecting your skin and overall health. With increasing UV levels peaking around midday, understanding these levels could mean the difference between a fun day outdoors and painful sunburn. Knowing when to seek shade and apply sunscreen not only helps prevent skin damage but also contributes to long-term skin health. Given Sterling’s Dfc climate, characterized by its distinct seasons, residents face varying UV exposure risks throughout the year. Keeping an eye on the UV Index empowers you to enjoy the sunshine safely!
At dawn, the UV Index begins its ascent, peaking at 1 by 7:00 AM. As the sun rises higher, it gently climbs to 2 by 9:00 AM, but the real intensity arrives at midday. By 12:00 PM, the index reaches 6, and it continues to soar to its maximum of 7 at 1:00 PM and 2:00 PM. As the afternoon progresses, the UV levels gradually taper off, descending to 5 by 4:00 PM and finally settling back to 2 by 7:00 PM. This data highlights the importance of sun protection during peak hours, particularly between 11:00 AM and 3:00 PM, when the UV exposure is most potent.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 1 | low | 45 min |
09:00 | 2 | low | 45 min |
10:00 | 2 | low | 45 min |
11:00 | 3 | moderate | 30 min |
12:00 | 4 | moderate | 30 min |
13:00 | 5 | moderate | 30 min |
14:00 | 6 | high | 25 min |
15:00 | 5 | moderate | 30 min |
16:00 | 5 | moderate | 30 min |
17:00 | 4 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 2 | low | 45 min |
The UV Index shows a clear seasonal variation, with exposure levels peaking during the warmer months. High-risk months for UV exposure occur from May to August, with indices reaching 6 to 7 and burn times as short as 25 minutes. March and April see moderate levels of UV at indices 3 and 4, while the rest of the year, from October to February, presents low UV exposure with longer burn times of up to 45 minutes. Visitors and residents are advised to take extra precautions during the high-risk months by using sunscreen, wearing protective clothing, and seeking shade, especially during peak sunlight hours. Maintaining awareness of the UV Index can help ensure enjoyable and safe outdoor activities year-round.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Sterling | 1 | 2 | 3 | 4 | 6 | 6 | 7 | 6 | 4 | 2 | 1 | 1 |
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 |