UV Index in Westwood, United States

Last updated: May 3, 2025

In Westwood, United States, understanding the UV Index is crucial for safeguarding your skin and overall health. With the area experiencing a Dfa climate, residents face varying UV exposure risks throughout the day, peaking around midday when the UV Index can reach as high as 9. Being aware of these levels is essential not only for preventing painful sunburns but also for reducing long-term skin damage and the risk of skin cancer. By staying informed about local UV conditions, you can enjoy the sunny days while protecting your skin effectively.

Hourly UV Index in Westwood

As the sun rises, the UV Index starts at a maximum of 1 at 7:00 AM, indicating safe sun exposure. By 9:00 AM, it climbs to 2, suggesting that while it’s still mild, some caution is advisable. The index spikes significantly from 10:00 AM, reaching 4, and continues to rise throughout the day. At 12:00 PM, it peaks at an impressive 8, followed closely by a high of 9 at both 1:00 PM and 2:00 PM—perfect times to seek shade or lather on sunscreen! As the afternoon wanes, the UV Index gradually declines to 6 at 4:00 PM, then eases to 3 by 6:00 PM, finally dipping back down to 1 by the evening. Enjoy the sun, but remember to protect your skin during those midday highs!

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

Monthly UV Index Trends in Westwood

Throughout the year, the UV Index demonstrates significant seasonal changes, with the highest levels occurring during the summer months. From March to August, the UV Index reaches high to very high categories, peaking at 10 in June and July, when the burn time is as little as 15 minutes. The high-risk months for sun exposure are April through August, where individuals should take precautionary measures. Residents and visitors are advised to use sunscreen, wear protective clothing, and seek shade to minimize the risk of skin damage during these months. As the year progresses into fall and winter, the UV Index decreases, reaching a low of 2 in December, where a burn time of 45 minutes is typical; however, caution should still be exercised when outdoors.

Monthly Maximum UV Index for Westwood, United States

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

The table above highlights how UV exposure in Westwood 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.

Westwood'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
Westwood	3	4	6	8	9	10	10	9	7	5	3	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5