UV Index in Winnsboro, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Winnsboro, United States, where sunny days combined with the humid subtropical climate can lead to significant UV exposure. Knowing the UV levels throughout the day helps individuals take proactive steps to prevent sunburn and protect skin health, particularly during peak hours when the index reaches a high of 10. With typical summer temperatures and ample sunlight, awareness of UV risks becomes vital for enjoying outdoor activities safely. Whether you’re relaxing in the sun or running errands, keeping an eye on the UV Index can help you enjoy the outdoors while safeguarding your skin.

Hourly UV Index in Winnsboro

During the day, the UV Index fluctuates, providing a clear picture of sunlight intensity. Morning hours see a gentle rise, with values peaking at 1 from 7:00 AM to 8:00 AM, making it a safe time for outdoor activities. However, as the sun climbs higher, the index sharply escalates, hitting 3 by 9:00 AM and jumping to an intense 7 by 11:00 AM. The hottest moment arrives at 1:00 PM and 2:00 PM, where it reaches a peak of 10, indicating a high risk of harm from unprotected sun exposure. The intensity begins to wane in the afternoon, dipping to 6 at 4:00 PM and gradually descending to 1 by 7:00 PM, suggesting that early morning and late evening are the most favorable times to bask in the sun safely.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
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	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

Monthly UV Index Trends in Winnsboro

Throughout the year, seasonal UV changes indicate notable variations in sun exposure risk. The high-risk months are concentrated from March to August, peaking in June and July when the UV Index reaches an extreme level of 11, allowing for a dangerous burn time of just 10 minutes. In contrast, the UV Index in January and December presents a moderate risk with a burn time of 30 minutes. As visitors and residents plan outdoor activities, it is crucial to be vigilant during the high UV periods, particularly in March through August. It's advisable to wear protective clothing, apply sunscreen liberally, and seek shade during peak sun hours to minimize skin damage and maintain safety.

Monthly Maximum UV Index for Winnsboro, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Winnsboro. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Winnsboro, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Winnsboro UV Index with Other United States Cities

The table above highlights how UV exposure in Winnsboro compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Winnsboro's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
	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
Winnsboro	4	7	8	10	10	11	11	10	9	8	6	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5