UV Index in Winnsboro, United States

Last updated: July 2, 2025

In Winnsboro, United States, being aware of the UV Index is crucial for keeping your skin safe and healthy. Understanding UV levels can significantly aid in preventing sunburn and protecting against long-term skin damage. With Winnsboro's humid subtropical climate (Cfa), residents often encounter elevated UV exposure, especially during peak hours when the index can soar to levels 11—indicating a very high risk to health. Staying informed about the UV Index can empower you to make smart choices about sun protection, ensuring that you enjoy the outdoors safely.

Hourly UV Index in Winnsboro

The UV Index for the day showcases a striking pattern, starting moderate at 7:00 AM with a value of 1. As the sun climbs higher, the index steadily rises, hitting 3 by 9:00 AM, and then surging to a peak of 11 between 1:00 PM and 2:00 PM. This indicates a high risk of harm from unprotected sun exposure during midday. Following the peak, the UV Index gradually declines to 4 by 5:00 PM and further decreases to 1 by 7:00 PM, emphasizing the critical importance of sun protection during the intense midday hours. It’s advisable to seek shade and wear sunscreen if you're outside during the peak period!

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	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	7	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