UV Index in Winfield, United States

Last updated: July 2, 2025

Staying aware of the UV Index is crucial for residents of Winfield, United States, especially during the sunnier months. Understanding the intensity of ultraviolet radiation can significantly aid in preventing sunburn and protecting your skin health. With a Cfa climate characterized by warm summers, Winfield sees higher UV levels peaking at 11 around midday, which poses increased risks for overexposure. By keeping an eye on the UV Index, you can make informed decisions about outdoor activities and safeguard your skin from potential damage.

Hourly UV Index in Winfield

The UV Index fluctuates throughout the day, beginning with a gentle rise from a modest 1 at 07:00 to a peak of 11 at noon. As the sun reaches its highest point, the intensity of UV radiation escalates, urging caution and protection. The index remains high until 14:00, maintaining a reading of 10, before gradually declining in the afternoon. By 17:00, it drops to 3 and cools off to 1 by evening, highlighting the dramatic shift in UV exposure as daylight fades. For a sun-safe day, plan outdoor activities in the morning or later in the evening!

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	2	low	45 min
09:00	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Winfield

Throughout the year, UV levels fluctuate significantly, with high-risk months occurring between March and September. During this period, the UV Index reaches its peak, particularly in May, June, July, and August, where it consistently ranks as 11, falling into the extreme exposure category and resulting in a quick burn time of only 10 minutes. As such, visitors and residents are strongly advised to take precautions by wearing protective clothing, applying sunscreen with a high SPF, and seeking shade during peak sun hours. The months of February and October present a moderate to high risk with UV Index values of 7, highlighting the importance of sun safety even during transitional seasons. With January, November, and December showing lower UV levels, the risk is reduced, but it’s still prudent to remain cautious.

Monthly Maximum UV Index for Winfield, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Winfield. 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 Winfield, 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 Winfield UV Index with Other United States Cities

The table above highlights how UV exposure in Winfield 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.

Winfield'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
Winfield	4	7	8	10	11	11	11	11	9	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5