Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Emerson, United States, where the climate falls under the Dfa zone, marked by hot summers and varied exposure to sunlight. As UV radiation levels can soar, particularly from noon to early afternoon—with a peak index of 11—being aware of these levels not only helps in preventing sunburn but also plays a significant role in protecting your long-term skin health. By keeping an eye on the UV Index, you can enjoy the outdoors safely while minimizing the risks associated with high UV exposure in this vibrant community.
As the day unfolds, the UV Index rises sharply, revealing the sun's intensity. At 7:00 AM, it starts low at 1, signaling a gentle morning. But by 10:00 AM, it surges to 5, urging early outdoor enthusiasts to apply sunscreen. The peak arrives at 1:00 PM with a blistering 11, indicating a strong need for protection. Following this zenith, the index gradually decreases, settling at 4 by 5:00 PM and then retreating to 1 as the sun sets at 7:00 PM. Throughout the day, it's clear: midday is when the sun is both brilliant and fierce, demanding our careful attention.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | 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 | 10 | very high | 15 min |
15:00 | 9 | very high | 15 min |
16:00 | 7 | high | 25 min |
17:00 | 4 | moderate | 30 min |
18:00 | 3 | moderate | 30 min |
19:00 | 1 | low | 45 min |
Throughout the year, UV index levels exhibit notable seasonal variations, with March to October presenting the highest risks for sun exposure. April through September, particularly the peak in June at an extreme UV Index of 11, marks the period when burn times drop to as low as 10 minutes. Residents and visitors should be especially cautious during these high-risk months, particularly when UV Index ratings reach 8 or above. To protect against harmful effects, it is advisable to wear sunscreen, seek shade, and don protective clothing during peak hours. Conversely, from November to February, the UV Index is generally moderate to low, allowing for safer sun exposure, although it’s still wise to remain vigilant, especially with UV exposure at 3 or higher.
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 |
Emerson | 3 | 5 | 6 | 8 | 9 | 11 | 10 | 9 | 8 | 6 | 3 | 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 |