Last updated: August 1, 2025
Understanding the UV Index is essential for residents of Syracuse, United States, where the unique BSk climate can lead to varying levels of sun exposure throughout the day. The UV Index provides crucial information about how intense the sun’s ultraviolet radiation is at different times, helping inhabitants take proactive measures against sunburn and protect overall skin health. With peak UV levels reaching as high as 11 around midday, awareness is vital to mitigate risks, especially during the warmer months. By monitoring the UV Index, you can enjoy outdoor activities safely while prioritizing your skin's well-being.
The UV Index fluctuates significantly throughout the day, peaking at an impressive 11 from noon to 1 PM. Starting the morning with a modest value of 1 at 7 AM, the index ramps up quickly, reaching 10 by 11 AM. As the sun climbs higher, it delivers its strongest rays, making midday the most critical time for sun exposure. The intensity gradually decreases in the afternoon, dipping to 3 by 5 PM and returning to a safe 1 by 7 PM. To stay safe under the sun, be sure to take protective measures during those highest UV 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 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences notable fluctuations, with the highest levels occurring during the late spring and summer months. April marks the transition into very high UV levels with an index of 10, while May and June reach extreme values of 11 and 12, respectively. Peak UV exposure is observed in July, maintaining an index of 12, and is closely followed by August (11). High-risk months for sun exposure include April through August, where burn times are significantly shortened, ranging from 10 to 15 minutes. Visitors and residents are advised to take precautions during these months by applying sunscreen, wearing protective clothing, and seeking shade, especially during midday hours when the sun's intensity is at its peak. As the year progresses, UV levels decrease, dropping to a moderate 3 by December, allowing for 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 |
| Syracuse | 4 | 5 | 7 | 10 | 11 | 12 | 12 | 11 | 10 | 7 | 5 | 3 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |