Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Holly, United States, where the climate can expose you to varying levels of ultraviolet radiation. Being aware of UV levels is essential not only for preventing painful sunburns but also for maintaining long-term skin health. With Holly's typical BSk climate, residents can expect higher UV exposure, especially during peak hours. From 10 AM to 2 PM, the UV Index often spikes, reaching levels as high as 12, underscoring the importance of sun safety practices. Stay informed to protect yourself and enjoy the sun responsibly!
The UV Index throughout the day presents a fascinating shift in sun intensity. At 07:00, the index starts low at 1, indicating a safe environment for outdoor activities. As the morning progresses, it steadily climbs, reaching 4 by 09:00 and 7 by 10:00. The sunshine peaks around 12:00, hitting a robust 11, and even escalates to 12 by 13:00, marking the apex of midday sun exposure. However, the index begins to gracefully descend after this high, dropping to 8 by 15:00, and tapering off to 3 at 17:00. As the evening sets in, the index returns to the safety of 2 at 18:00 and further recedes to a gentle 1 by 19:00. This data underscores the importance of sun safety during peak hours, particularly between 11:00 and 14:00, when protective measures are most crucial.
| 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 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index experiences notable seasonal fluctuations, significantly impacting sun exposure risk throughout the year. From January to February, UV levels remain moderate, making burn times approximately 30 minutes. However, as spring arrives in March and peaks in April, the UV Index surges to very high levels of 8 and 10, respectively, reducing burn times to just 15 minutes. The summer months of May through August present the highest risk, with extreme UV Index readings of 11 to 12 and burn times dropping to 10 minutes. In September, the risk diminishes slightly but remains very high, while by October, it further decreases to a high index of 7, allowing for a burn time of 25 minutes. As winter approaches, November and December return to moderate UV levels. Visitors and residents are advised to take protective measures during the high-risk months of March to September, including using sunscreen, wearing protective clothing, and seeking shade whenever possible.
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 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Holly | 4 | 5 | 8 | 10 | 11 | 12 | 12 | 11 | 10 | 7 | 5 | 3 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |