Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Hawthorne, United States, as it serves as a vital indicator of the sun's intensity and its potential impact on health. With UV levels peaking significantly during midday hours, awareness is key to preventing sunburn and maintaining long-term skin health. As a city characterized by a BSk climate, Hawthorne experiences notable UV exposure risks, especially during the summer months. Implementing sun safety practices informed by the UV Index can help you enjoy the outdoors while protecting your skin from harmful UV radiation. Stay informed, stay safe!
The UV Index throughout the day exhibits a distinct rise and fall, reflecting the sun's intensity as it journeys across the sky. Starting at a gentle 1 at 7 AM, the index gradually climbs to a moderate 3 by 8 AM. The day reaches its peak around 12 PM, soaring to a 12—an indication to seek shade and protect your skin. As the afternoon progresses, the UV level begins to taper off, dropping to 9 by 3 PM and dwindling further to 1 by 7 PM. This dynamic pattern highlights the importance of staying vigilant and applying sunscreen during the sun's zenith for optimal skin safety!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | 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 |
As the seasons change, so do the UV Index levels, indicating varying risks of sun exposure. The high-risk months are from March to August, with April, May, June, and July classified as having an extreme UV Index of 12. During these months, individuals can burn in as little as 10 minutes of unprotected sun exposure. It’s crucial for both visitors and residents to take precautions, such as wearing sunscreen, protective clothing, and seeking shade, especially during peak hours. Conversely, from November to February, the UV Index drops to moderate levels, allowing for safer outdoor activities with less risk of sunburn, although it's still advisable to remain cautious.
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 |
| Hawthorne | 4 | 6 | 8 | 10 | 12 | 12 | 12 | 11 | 10 | 7 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |