Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Unionville, United States, where the climate is classified as Cfa, characterized by hot, humid summers. Awareness of UV levels can significantly impact your well-being, helping to prevent sunburn and promote overall skin health. With peak UV Index values soaring to 11 during midday, it’s essential to recognize the elevated risks associated with sun exposure in this region. By staying informed about the daily UV Index, you can enjoy the sunshine safely while protecting your skin from harmful effects.
The UV Index today exhibits a dramatic surge from the early morning hours, starting at a mild 1 at 07:00 and 08:00. However, by 09:00, it climbs to 3, signaling a gradual increase in sun exposure. The peak occurs at 12:00, where the index reaches an intense 10, prompting outdoor enthusiasts to take proper precautions. The highest recorded value of 11 at 13:00 indicates a critical level of sun intensity, making sunscreen a necessity. As the afternoon progresses, values decline, with the index dropping to 9 at 15:00, followed by a gentle descent to 4 by 17:00. The evening hours see a calming effect, with the UV Index returning to 1 by 19:00. It's a perfect reminder to enjoy the sun responsibly throughout the day!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 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 exhibits significant variations, with high-risk months occurring from March to August, where the index reaches very high to extreme levels. In March and April, the UV Index peaks at 10, and it escalates to 11 in June and July, indicating an urgent need for sun protection since the burn time drops to just 10 minutes during these months. The risk decreases in the fall and winter, with November and December showing moderate levels (UV Index of 5 and 3, respectively) and extended burn times of 30 minutes. To ensure safety, visitors and residents are advised to take extra precautions during the high-risk months by wearing sunscreen, protective clothing, and seeking shade, while enjoying outdoor activities to minimize the risk of skin damage.
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 |
| Unionville | 4 | 6 | 8 | 10 | 10 | 11 | 11 | 10 | 9 | 8 | 5 | 3 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |