Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Redby, United States, where the risk of sun exposure can vary significantly throughout the day. With peak UV levels reaching 9 from 12 PM to 2 PM, awareness of these measurements is essential for preventing sunburn and protecting skin health. Given Redby’s Dfb climate, characterized by warm summers and cool winters, it's important to recognize that even moderate UV levels can have cumulative effects on skin. By staying informed about the UV Index, you can enjoy the outdoors responsibly while safeguarding your skin from harmful rays.
As the sun rises, the UV Index begins its ascent, starting at a gentle 1 at 07:00. By 08:00, it climbs to 2, indicating a mild increase in UV exposure. The real peak arrives at 12:00, where the index reaches a striking 9, underscoring the importance of sun protection during these hours. This high level remains steady until 14:00, followed by a gradual descent as the afternoon wanes: 8 at 15:00, 6 at 16:00, and continuing down to 2 at 18:00. As evening approaches, the UV Index drops to a soft 1 by 19:00, signaling a gentle close to the sun-soaked day. Remember to take precautions during the midday hours to safeguard your skin!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 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 | 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, UV Index levels exhibit seasonal variations that significantly affect sun safety. January shows a low UV Index of 2, indicating 45 minutes before skin damage occurs, while February and March see a rise to moderate levels (4 and 5), with burn times reducing to 30 minutes. As spring transitions into summer, April reaches a high UV Index of 7, reducing burn time to 25 minutes, followed by the peak summer months of May through August, where the UV Index hits a very high rating of 8 to 9, allowing only 15 minutes of safe sun exposure. The risk subsides in September and October, returning to high and moderate levels with increased burn times of 25 and 30 minutes, respectively. Finally, November and December revert to low exposure categories, providing 45 minutes before damage occurs again. Visitors and residents should prioritize sun safety, especially during the high-risk months of May to August, by wearing protective clothing, applying sunscreen regularly, and seeking shade during peak sunlight hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Redby | 2 | 4 | 5 | 7 | 8 | 9 | 9 | 8 | 7 | 4 | 2 | 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 |