Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Warren, United States, where sunny days can lead to unexpected skin damage. With peak UV levels reaching as high as 11 during midday, awareness plays a vital role in preventing sunburn and promoting long-term skin health. Given Warren's Cfa climate, which offers warm summers and lush greenery, it's essential to recognize the potential risks associated with UV exposure throughout the day. By monitoring the UV Index, you can take proactive steps to safeguard your skin and enjoy the outdoors safely.
The UV Index throughout the day presents a clear pattern of increasing intensity, peaking at noon. Starting from a low of 1 at 7:00 AM and 8:00 AM, it steadily rises, reaching 3 by 9:00 AM. The real surge occurs between 10:00 AM and 1:00 PM, where the index escalates dramatically, hitting a high of 11 at both 12:00 PM and 1:00 PM—a strong indicator of potential harm from unprotected sun exposure. As the afternoon progresses, the UV Index begins to decline, with values of 9 at 3:00 PM, tapering off to 2 by 6:00 PM, and finally returning to 1 by 7:00 PM. For those enjoying outdoor activities, it's crucial to stay protected during the midday peak hours to safely bask in the sun!
| 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 | 6 | high | 25 min |
| 11:00 | 8 | 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, peaking in the summer months. From January (UV Index 5) to February (UV Index 8), there's a clear increase, with March and April maintaining high levels (UV Index 9-10). May through August sees the highest readings, particularly reaching UV Index 12 in June and July, indicating extreme exposure risk, where skin can burn within just 10 minutes. As the year transitions to September and October, the UV Index begins to decline but remains in the very high category until November (UV Index 6) and finally returns to moderate in December. Visitors and residents should be particularly cautious between February and August—the high-risk months for UV exposure—by implementing protective measures such as wearing sunscreen, sunglasses, and hats, and seeking shade during peak sun hours.
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 |
| Warren | 5 | 8 | 9 | 10 | 11 | 12 | 12 | 11 | 10 | 8 | 6 | 5 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |