Last updated: July 2, 2025
Understanding the UV Index in Arlington, United States, is crucial for safeguarding your skin against harmful UV radiation. The UV Index measures the strength of sun’s ultraviolet rays, helping residents and visitors alike to take precautionary steps to prevent sunburn and promote long-term skin health. With Arlington's climate featuring mild summer temperatures, the risk of high UV exposure peaks during midday hours, particularly when the index reaches levels as high as 10. Being aware of these UV levels empowers you to enjoy the outdoors safely, ensuring you can soak up the sun without compromising your well-being.
From 07:00 to 08:00, the UV Index starts off mild with a maximum of 1 to 2, making it a safe time for early outdoor activities. As the sun climbs higher, the UV levels rise sharply, reaching 4 by 09:00 and hitting 6 by 10:00. The intensity peaks at 13:00 with a significant 10, indicating high exposure risk, perfect for applying sunscreen and seeking shade. As we move into the afternoon, levels gradually decrease, tapering to 9 by 14:00 and falling back to a more manageable 4 by 17:00. By evening, UV levels drop to 2 at 18:00 and retreat to 1 by 19:00, marking a safe return for those looking to enjoy twilight outdoors. Remember, it's essential to stay vigilant 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 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | 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 demonstrates significant seasonal variations, with the highest levels occurring in late spring and summer. From April to August, the index reaches very high levels of 9 to 10, particularly peaking in May and June, where the burn time is notably reduced to just 15 minutes. This period signifies high-risk months and poses increased sun exposure dangers. In contrast, the winter months (January and December) see a return to a low UV index of 2, allowing for longer exposure times of 45 minutes without burning. Visitors and residents are advised to take extra precautions during the high-risk months (April to August) by wearing protective clothing, using sunscreen, and seeking shade, especially during the peak midday hours. Meanwhile, the spring and fall months require moderate vigilance due to UV levels ranging from 3 to 5.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arlington | 2 | 4 | 5 | 7 | 9 | 10 | 10 | 9 | 8 | 5 | 3 | 2 |
| 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 |