Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Hart, United States, especially given the area's semi-arid climate (BSk) which can lead to heightened sun exposure. With UV levels peaking at 12 during midday hours, awareness of these values is essential for preventing sunburn and maintaining long-term skin health. By keeping track of the UV Index, residents can make informed choices about sun protection and outdoor activities, ensuring they enjoy the beautiful sunny days of Hart safely and effectively.
As the sun rises, the UV Index starts off low at 1 from 7:00 AM to 9:00 AM, making it a comfortable time for outdoor activities. However, as the day progresses, the intensity of the sun quickly ramps up. By 10:00 AM, it reaches 4, and by 11:00 AM, it surges to 7. The peak occurs at 12:00 PM with a striking 10, signaling the need for sun protection. The UV exposure continues to escalate, hitting a maximum of 12 at 1:00 PM and 2:00 PM. Thankfully, it gradually begins to decline after this peak, dropping to 6 by 5:00 PM and further to 2 by 7:00 PM. This data highlights the importance of taking precautions during the midday hours when UV levels pose the greatest risk.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV radiation levels vary significantly, with the highest risk months being March through August. During this period, the UV Index reaches extreme levels, peaking at 12 in June and July, where the recommended burn time is as little as 10 minutes. Visitors and residents should exercise caution and take protective measures, such as wearing sunscreen, hats, and UV-protective clothing, especially in late spring and summer. Conversely, the winter months of January and December present a lower risk with a moderate UV Index of 4 and a longer burn time of 30 minutes. However, it's imperative to remain vigilant year-round, as even moderate levels can contribute to skin damage over time.
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 |
| Hart | 4 | 7 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |