UV Index in Willows, United States

Last updated: June 2, 2025

In Willows, United States, being mindful of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels helps prevent sunburn and reduces long-term skin damage, making it essential for outdoor enthusiasts and residents alike. With a Mediterranean climate and some of the highest UV exposure around midday—peaking at 11—locals need to stay informed to effectively protect themselves during those sun-soaked summer days. Take charge of your skin health by keeping an eye on the UV Index and enjoying the outdoors safely!

Hourly UV Index in Willows

As the sun rises, the UV Index begins its ascent, starting at a mild 1 at 07:00. By 08:00, it gently climbs to 2, but watch out as it rampages up to 4 by 09:00. The real intensity kicks in at 10:00, when the index hits a 6, and it reaches its peak of 10 at 12:00. The sun is relentless, pushing the index to 11 from 13:00 to 14:00, making this the most hazardous time of the day. Fortunately, the UV levels start to decline after 15:00, dropping back to 9, then dwindling to 4 by 17:00, and finally retreating to a safer 1 by 19:00. Ensure you take proper sun protection measures during the peak hours to safeguard your skin!

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	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	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 Willows

Throughout the year, UV levels exhibit notable seasonal changes, with high-risk months occurring from April to August, where the UV Index reaches extreme levels of 11. Specifically, May, June, and July are critical periods, characterized by minimal burn times of just 10 minutes. In contrast, the winter months of January, February, November, and December display a lower UV Index, categorized as moderate (3-5), allowing up to 30 minutes of sun exposure without significant risk. As UV exposure increases, it is crucial for residents and visitors to take precautions, especially during high-risk months by wearing protective clothing, using sunscreen, and seeking shade during peak hours to effectively mitigate the risks of sunburn and long-term skin damage.

Monthly Maximum UV Index for Willows, United States

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

The table above highlights how UV exposure in Willows 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.

Willows'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
Willows	3	5	7	8	11	11	11	10	9	6	4	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