UV Index in Cottonwood, United States

Last updated: July 2, 2025

Understanding the UV Index in Cottonwood, United States, is crucial for protecting your skin and overall health. With the region's Csa climate, characterized by dry summers and abundant sunshine, UV exposure can reach concerning levels, especially during midday when the index peaks at a striking 11. By staying informed about UV levels, you can take proactive measures against sunburn and long-term skin damage, ensuring that your outdoor activities remain safe and enjoyable. Whether you're hiking in the nearby mountains or relaxing in your backyard, keeping an eye on the UV Index helps you enjoy the sunny days while safeguarding your skin health.

Hourly UV Index in Cottonwood

The UV Index throughout the day follows a predictable rise and fall, peaking at 11 around 1:00 PM. Starting at a modest 1 at 7:00 AM, it gradually escalates, reaching 10 by 12:00 PM, signaling the need for sun protection. As the afternoon progresses, the index dips from 11 to 8 by 3:00 PM, then declines further to 2 by 6:00 PM, and finally settles back at 1 by 7:00 PM. This data underscores the importance of taking precautions during the hours of peak UV exposure, particularly between 11:00 AM and 3:00 PM, when levels are highest and pose the greatest risk to skin health.

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	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	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 Cottonwood

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 Cottonwood, United States

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

The table above highlights how UV exposure in Cottonwood 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.

Cottonwood'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
Cottonwood	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