Last updated: June 2, 2025
In Challenge-Brownsville, United States, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you avoid sunburn and long-term skin damage, ensuring you enjoy the outdoors safely. With a Mediterranean climate characterized by warm summers and mild winters, Challenge-Brownsville presents unique risks due to its high UV exposure—especially during peak hours when the index can soar to a staggering 11. Stay informed and take proactive measures to safeguard your skin while embracing the beautiful sunshine that this vibrant location has to offer!
The UV Index today paints a vivid picture of solar intensity, peaking dramatically between 12:00 PM and 2:00 PM with a striking 11—a warning to seek shade and protect skin. Starting the day at a gentle 1 at 7:00 AM, the index gradually climbs, reaching 4 by 9:00 AM and escalating to 9 by 11:00 AM. As the sun reaches its zenith, the index hits 11, indicating extreme conditions that persist for a solid three hours. Following this midday blast, it gracefully declines to 6 by 4:00 PM, before tapering off to a safer 1 by the evening. Remember to stay sun-smart during those peak hours!
| 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 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 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 experiences significant fluctuations, reflecting seasonal changes in sun exposure. January and December both see a UV Index of 3, categorized as moderate, with a burn time of 30 minutes. As spring approaches, February reaches a UV Index of 5 (moderate), while March escalates to 8 (very high), indicating a sharp increase in potential sunburn risk. The peak months for UV exposure occur from April to July, with July remaining constant at a critical UV Index of 11, categorized as extreme; during this period, only 10 minutes of unprotected sun exposure can lead to burns. As summer transitions to fall, the UV Index gradually declines, with September at 9 (very high) and heading into October at 7 (high), where the burn time increases to 25 minutes. With these fluctuations in mind, it is essential for visitors and residents to take precautionary measures, especially from March through August, when UV levels are particularly high; wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours can greatly reduce the risk of sunburn and long-term 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 |
| Challenge-Brownsville | 3 | 5 | 8 | 9 | 11 | 11 | 11 | 10 | 9 | 7 | 4 | 3 |
| 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 |