Last updated: July 2, 2025
In Greenbriar, United States, being mindful of the UV Index is crucial for protecting your skin and overall health. Understanding the levels of ultraviolet radiation can help residents avoid sunburn and reduce the risk of long-term skin damage. With a Cfa climate, Greenbriar experiences varying UV exposure throughout the day, peaking at a significant UV Index of 12 during the midday hours. This highlights the importance of being vigilant about sun protection—whether it’s wearing sunscreen, shielding your skin with clothing, or seeking shade. Stay informed and enjoy the sunshine safely in Greenbriar!
As the sun rises on this beautiful day, the UV Index begins at a mild 1 at 7:00 AM, gradually creeping up to a moderate 3 by 9:00 AM. The heat peaks around noon, reaching a sizzling 10 at 12:00 PM, and quickly escalates to a maximum of 12 between 1:00 PM and 2:00 PM—the time to seek shade! However, as the afternoon wanes, the UV intensity tapers off, dropping to 10 at 3:00 PM, then declining to 5 by 5:00 PM. As dusk approaches, the index continues to decrease, ending the day at a comfortable 1 by 7:00 PM. Remember to protect your skin during those peak hours!
| 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 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits significant seasonal fluctuations, peaking during the warmer months. From April to September, the region experiences extreme UV levels (Index 11-12), which necessitates heightened awareness and sun protection as the burn time is reduced to just 10 minutes. February and March also see very high UV exposure, with an index of 8 and 9 respectively, where burn times drop to 15 minutes. Conversely, November to December presents lower risks, with UV indices ranging from 5 to 7 and burn times extending to 25-30 minutes. Visitors and residents should prioritize sun safety, especially between April and September, by seeking shade, wearing protective clothing, and applying sunscreen frequently to mitigate the risk of overexposure during these high-risk months.
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 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
| Greenbriar | 6 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 11 | 9 | 7 | 5 |