UV Index in Westfield, United States

Last updated: June 2, 2025

In Westfield, United States, being aware of the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels helps you prevent sunburn and long-term skin health issues, ensuring you enjoy the outdoors safely. With Westfield's Dfb climate—characterized by warm summers and cold winters—residents often face heightened UV exposure, particularly during peak hours from 10 AM to 2 PM, when the UV Index can soar to 10. Stay informed and safeguard your skin by monitoring the UV Index regularly!

Hourly UV Index in Westfield

The UV Index throughout the day exhibits a notable progression, peaking at 10 during the 12:00 PM to 1:00 PM hours, indicating a strong risk of harm from unprotected sun exposure. Starting at a mild 2 at 7:00 AM, the index climbs steadily, surpassing 5 by 9:00 AM and escalating dramatically to its maximum at 11:00 AM with a reading of 9. As the afternoon rolls in, the intensity wanes slightly, dropping to 8 by 2:00 PM, before gradually falling to 5 at 4:00 PM. By evening, the index lowers to a gentle 1 by 6:00 PM, suggesting a return to safer conditions as the sun sets. Staying shaded and using sunscreen is especially crucial during the midday 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	2	low	45 min
08:00	3	moderate	30 min
09:00	5	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	10	very high	15 min
13:00	10	very high	15 min
14:00	8	very high	15 min
15:00	7	high	25 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 Westfield

Throughout the year, the UV Index shows significant seasonal changes, indicating varying levels of sun exposure risk. The highest risk months are from April to August, where the UV Index reaches 7 to 10, classified as high to very high, with burn times diminishing to just 15 minutes during this peak period. In contrast, the winter months of January and December exhibit much lower UV levels, categorized as low, allowing for 45 minutes before burning occurs. It is crucial for visitors and residents to be especially vigilant during the high-risk months. Sunscreen, protective clothing, and avoiding peak sun hours are strongly advised to minimize the risk of skin damage.

Monthly Maximum UV Index for Westfield, United States

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

The table above highlights how UV exposure in Westfield 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.

Westfield'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
Westfield	2	3	5	7	8	10	8	8	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