Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Fairfield, United States, where sunny days abound in the temperate Cfa climate. With peak UV levels reaching as high as 11 around noon, being aware of your UV exposure can significantly aid in preventing sunburn and safeguarding your skin health. The risks associated with unprotected sun exposure are amplified during the summer months, making it essential to monitor UV levels daily. Whether you're lounging at the beach or enjoying outdoor activities, knowing the UV Index helps you take proactive steps to protect yourself and your loved ones from harmful rays. Stay informed and keep your skin safe!
The UV Index for the day showcases a striking pattern, starting moderate at 7:00 AM with a value of 1. As the sun climbs higher, the index steadily rises, hitting 3 by 9:00 AM, and then surging to a peak of 11 between 1:00 PM and 2:00 PM. This indicates a high risk of harm from unprotected sun exposure during midday. Following the peak, the UV Index gradually declines to 4 by 5:00 PM and further decreases to 1 by 7:00 PM, emphasizing the critical importance of sun protection during the intense midday hours. It’s advisable to seek shade and wear sunscreen if you're outside during the peak period!
| 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 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index varies significantly throughout the year, indicating changes in sun exposure risk. Notably, March through September presents the highest risk, peaking in July with an intense UV Index of 12, categorized as extreme, and a burn time of just 10 minutes. April, May, June, and August maintain similarly high levels, all falling under the extreme category. The high-risk months where caution is particularly warranted are February through October, with March to August being critical for sun safety. Residents and visitors should take precautions during these months, such as wearing protective clothing, using broad-spectrum sunscreen, and seeking shade, particularly during peak hours of sunlight, to minimize the risk of skin damage. As the seasons transition, January and December demonstrate lower levels (UV Index 4), with moderate exposure risk, allowing for more lenient outdoor activities.
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 |
| Fairfield | 4 | 7 | 8 | 11 | 11 | 11 | 12 | 11 | 10 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |