UV Index in Willits, United States

Last updated: June 2, 2025

In Willits, United States, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding UV levels can help residents and visitors alike take necessary precautions against harmful radiation, especially during the peak hours from 11 AM to 2 PM, when the index can soar to an extreme 11. With Willits' Csb climate, which features mild summers and frequent sunshine, the risk of overexposure is ever-present. Stay informed and protect your skin by checking the UV Index regularly, ensuring outdoor activities remain safe and enjoyable.

Hourly UV Index in Willits

The UV Index throughout the day showcases a steady increase as the sun climbs, peaking at an intense 11 between 12:00 PM and 2:00 PM. Early morning hours start at a mild 1 at 7:00 AM, gradually rising to 4 by 9:00 AM. As the clock strikes 10:00 AM, the index reaches 6, marking the onset of higher UV levels. From 11:00 AM, the sun’s intensity ramps up significantly, hitting 9 and holding steady at 11 during the peak afternoon hours. As shadows lengthen after 2:00 PM, the UV Index dips, descending to 9 at 3:00 PM, and gradually falling to 2 by the evening. Remember to stay protected during peak hours for optimal sun safety!

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	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 Willits

The UV Index experiences notable fluctuations throughout the year, exhibiting a marked increase from early spring into summer. January and December are characterized by a moderate UV Index of 3, allowing for relatively safe sun exposure times of 30 minutes. As we move into March, the UV Index rises to 7, indicating high exposure risk with a reduced burn time of 25 minutes. The most critical months for UV exposure are May through August, where the index peaks at 11, categorized as extreme, and a mere 10 minutes of unprotected sun exposure can lead to burns. In September, the index drops slightly to 9, yet still remains in the very high category, with a 15-minute burn time. Residents and visitors are advised to take extra precautions during high-risk months, utilizing sunscreen, protective clothing, and seeking shade during peak hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Willits, United States

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

The table above highlights how UV exposure in Willits 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.

Willits'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
Willits	3	5	7	8	11	11	11	11	9	7	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