Last updated: May 3, 2025
Understanding the UV Index is essential for residents of Redby, United States, where the climate often presents unique challenges during sunny days. As outdoor activities become a part of daily life, being aware of UV levels can help prevent sunburn and protect skin health, ensuring that time spent in the sun is both enjoyable and safe. With peak UV exposure typically occurring around midday, when the index reaches levels of 8, it’s crucial for everyone—especially in the Dfb climate zone—to stay informed about UV risks and adopt protective measures. Prioritizing awareness of the UV Index will enable you to enjoy Redby's beautiful outdoors while safeguarding your skin against harmful ultraviolet rays.
As the day unfolds, the UV Index rises steadily, reaching its peak at 12:00 PM with a significant 8. The morning starts gently with a maximum of 1 at 7:00 AM, gradually escalating to 2 by 8:00 AM, and hitting 3 by 9:00 AM. The real intensity comes around 11:00 AM, when the index reaches 6, signaling the need for sun protection. From 12:00 PM to 2:00 PM, the UV Index remains high at 8, making it crucial to stay shaded and apply sunscreen. As the afternoon wanes, the index begins to decline, sliding down to 7 at 3:00 PM, and further to 5 by 4:00 PM. By 6:00 PM, the UV danger diminishes, dropping to 2, and eventually winding down to a safe 1 by 7:00 PM. Enjoy the sun, but don't forget your protection during the peak hours!
| 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | 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, 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 |