Last updated: August 1, 2025
Understanding the UV Index is crucial for residents of Lexington, United States, where the combination of its Cfa climate and peak UV levels can lead to significant sun exposure risks. Knowing the daily UV levels is essential for preventing sunburn and maintaining skin health, particularly during the summer months when indices can soar to as high as 10 between noon and 2 PM. With sunny days being a hallmark of the area, staying informed about UV radiation helps you enjoy outdoor activities while protecting your skin from harmful effects.
Throughout the day, the UV Index exhibits a remarkable rise, peaking at 10 between 12:00 PM and 2:00 PM, indicating a high risk of harm from unprotected sun exposure. Starting the morning at a mere 1 at 7:00 AM, the index steadily climbs as the sun ascends, hitting 5 by 10:00 AM and rapidly accelerating to 8 by 11:00 AM. After reaching its zenith at noon, the readings gradually decline through the afternoon, dropping to 4 by 5:00 PM and falling further to 1 by 7:00 PM. It's clear that careful sun protection is essential during the midday hours when the sun's strength is at its most intense.
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 | 7 | high | 25 min |
12:00 | 9 | very high | 15 min |
13:00 | 10 | very high | 15 min |
14:00 | 10 | very high | 15 min |
15:00 | 8 | 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, with high-risk months primarily occurring from March to September. During this period, particularly in May and June, the UV Index reaches its peak at 10 and 11, categorizing it as very high to extreme and resulting in a rapid burn time of just 10 to 15 minutes. As the season transitions into October, the risks diminish, but it's still advisable to exercise caution. Residents and visitors are strongly encouraged to take protective measures during these months, such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade to minimize UV exposure and skin damage. Remember, even on cloudy days, UV radiation can still pose a threat, so stay vigilant year-round!
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 |
Lexington | 3 | 6 | 8 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 5 | 3 |
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 |