Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Darien, United States, especially as the region's Dfa climate brings distinct seasonal variations and a heightened risk of UV exposure. With daily UV levels peaking at 10 around noon, awareness of these levels is essential for effective sunburn prevention and maintaining long-term skin health. By recognizing when the sun's rays are strongest—from the morning's gradual rise to the peak hours—Darienites can take proactive measures to protect their skin and enjoy the outdoors safely. Stay informed about the UV Index to help safeguard your health under the vibrant Connecticut sun!
At dawn, the UV Index starts off gently at 1 by 7:00 AM, barely warranting sun protection. As the morning unfolds, it gradually climbs to 2 by 8:00 AM and reaches 4 at 9:00 AM, signaling moderate exposure risk. The sun peaks at noon with a maximum of 10, indicating high risk for harm from unprotected sun exposure. From 1:00 PM to 2:00 PM, the UV Index holds steady at 10, urging everyone to stay mindful of their sun safety. As the afternoon progresses, the levels decline, dipping to 9 at 2:00 PM and falling further to 5 by 4:00 PM. By evening, the index reduces to 1 by 7:00 PM, allowing for a safe outdoor experience as daylight dims. It’s clear that the midday hours require vigilance against sun exposure, while early and late hours provide a more relaxed approach.
| 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 | 10 | 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 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV index levels fluctuate significantly, with notable increases during the warmer months. January and February experience a moderate UV index of 3 and 4, allowing for a 30-minute burn time under the sun. As the seasons transition into March and onward, the risk escalates, peaking in June and July with a maximum UV index of 10—classifying these months as high-risk. During these summer months, individuals are advised to limit sun exposure to just 15 minutes to prevent skin damage. The trend continues with August and September maintaining high levels (UV index of 9 and 8 respectively) before tapering off in October (UV index 6) and returning to moderate levels in November and December (UV index of 4 and 2). Residents and visitors should prioritize sun protection, especially during the peak months of April through September.
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 |
| Darien | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 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 |