Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Ririe, United States, where the climate's Dfb classification brings a unique blend of seasonal changes that can affect sun exposure. As UV levels reach their peak, particularly between 10 AM and 2 PM, awareness of these levels is vital for sunburn prevention and maintaining long-term skin health. With a maximum UV Index of 11 on sunny days, Ririe's exposure risks underscore the importance of protecting your skin, making it essential to stay informed about daily UV fluctuations to enjoy the outdoors safely.
As the sun rises and the day unfolds, the UV Index reveals a dramatic increase in solar intensity. At 07:00, it starts off mild with a UVI of 1, but by 08:00, it more than doubles to 2. The ascent continues, peaking at 12:00 with a striking UVI of 10, indicating a strong risk of harm from unprotected sun exposure. Peak hours arrive at 13:00 and 14:00, where it hits an impressive 11—the highest point of the day—before gradually tapering off. As the afternoon wanes, the index drops to 5 by 17:00 and back down to a safer 1 by 19:00. It's a perfect reminder to stay protected from those mid-day rays when UV levels are at their highest!
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits significant seasonal variation, peaking during the summer months and dramatically declining in winter. From January to February, the UV Index ranges from 3 to 5, classified as moderate, allowing for around 30 minutes of safe sun exposure. However, March to June sees a sharp increase, reaching an extreme level of 11 in both June and July, where unprotected skin can burn in just 10 minutes. The high-risk months for UV exposure are therefore March through August, where the index remains predominantly high to extreme. As a result, it is crucial for visitors and residents to take protective measures during these months, such as wearing sunscreen, protective clothing, and seeking shade, especially during peak hours. From September to December, while the UV Index decreases, users should still remain vigilant, as moderate levels persist late in the year.
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 |
| Ririe | 3 | 5 | 8 | 9 | 10 | 11 | 11 | 10 | 9 | 6 | 4 | 3 |
| 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 |