Last updated: June 2, 2025
Being aware of the UV Index in Ranchester, United States, is essential for safeguarding your skin health and preventing sunburn. Understanding UV levels helps residents and visitors alike take proactive steps against harmful solar radiation, especially during the sun's peak hours. With Ranchester’s BSk climate, characterized by dry conditions and ample sunshine, UV exposure can be significant—especially when indexes soar to 11 around midday. Embracing awareness and protection can empower you to enjoy the outdoors while minimizing the risks associated with sun exposure.
As the day unfolds, the UV Index rises steadily, peaking at 11 around 1 PM—a clear signal for sun protection. Starting from a low of just 1 at 7 AM, it escalates through the morning, hitting 8 by 11 AM. At 12 PM, the intensity reaches a significant 10, before slightly diminishing to 9 at 3 PM and tapering off rapidly in the afternoon. As the sun begins to set, the UV levels drop to 4 by 5 PM, finally settling back to 1 by 7 PM. With this clear UV trajectory, staying cautious during the peak hours, especially from 11 AM to 2 PM, is essential for skin safety. Don your sunscreen and enjoy the sun responsibly!
| 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 | 8 | 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 | 9 | 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, the UV Index fluctuates significantly, reflecting seasonal changes in sun exposure. January and February mark the lower end of the UV spectrum with a moderate index of 3 and 5, allowing for burn times of 30 minutes. However, as spring approaches, UV exposure intensifies, reaching 6 in March and escalating to a very high UV Index of 9 in both April and May, decreasing burn time to 15 minutes. The peak UV Index occurs in June at an extreme level of 11, where minimal exposure can lead to sunburn in as little as 10 minutes. This high risk continues into July and August with an index of 10 and 9, respectively. September sees a slight decline to an index of 8, while October and November return to a moderate index of 5 and 3, allowing longer burn times of 30 minutes. Finally, December presents a low UV Index of 2, with a burn time of 45 minutes. Visitors and residents are strongly advised to take precautions during the high-risk months of April through September, ensuring they use proper sunscreen, wear protective clothing, and seek shade to avoid adverse effects from sun exposure.
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 |
| Ranchester | 3 | 5 | 6 | 9 | 9 | 11 | 10 | 10 | 8 | 5 | 3 | 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 |