Last updated: August 1, 2025
Staying aware of the UV Index is crucial for residents of Winthrop, United States, where sunny days can quickly lead to increased sun exposure. Understanding UV levels helps in preventing sunburn and protecting overall skin health, especially when peak values reach as high as 10 from late morning to early afternoon. With Winthrop's Dfa climate, characterized by a marked seasonal variation in temperature and exposure to direct sunlight, it's essential to be proactive about UV safety. By taking the time to check the UV Index, you can enjoy the outdoors while minimizing your risk of skin damage!
The UV Index today reveals a clear pattern of solar intensity peaking as the day progresses. Starting at a low 1 at 07:00, it steadily climbs to 2 by 08:00 and further to 3 by 09:00. The sun asserts its dominance with a 6 at 10:00, escalating dramatically to 8 at 11:00. The intensity reaches its zenith with a staggering 10 from 13:00 to 14:00, the point at which sun safety becomes crucial. As the afternoon wears on, the index begins to taper off, dropping to 8 at 15:00, and further cooling to 4 by 17:00. The evening ushers in a return to more manageable levels, with 2 at 18:00 and winding down to 1 by 19:00. Plan your outdoor activities wisely, savoring the sun's rays during the peak hours while taking precautions to protect your skin!
| 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 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | 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 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant seasonal changes, with the highest risk occurring during the late spring and summer months. From April to September, the UV Index reaches very high to extreme levels, particularly peaking in June at an Index of 11, where the burn time drops to just 10 minutes. Consequently, visitors and residents should be particularly vigilant during this period, especially in May through August, where the burn time remains critical at 15 minutes for high UV levels. In contrast, the months from October to March exhibit a moderate UV Index, with safer burn times of 30 minutes. It is advisable for everyone to adopt appropriate sun protection measures, such as wearing sunscreen, protective clothing, and seeking shade, during those peak months to minimize skin damage and health risks.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Winthrop | 3 | 4 | 5 | 8 | 9 | 11 | 10 | 9 | 8 | 5 | 3 | 3 |
| 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 |