UV Index in Westport, United States

Last updated: May 3, 2025

In Westport, United States, staying aware of the UV Index is crucial for protecting your skin against harmful ultraviolet radiation. Understanding UV levels is essential not only for preventing sunburn but also for safeguarding your long-term skin health. With a Csb climate that offers a mix of cool summers and relatively mild winters, the region still poses significant UV exposure risks during sunny days, particularly between 10 AM to 2 PM when the index peaks at 9. By keeping track of the UV Index, you can enjoy the outdoors safely while minimizing the potential effects of UV rays.

Hourly UV Index in Westport

The UV Index throughout the day presents a clear ascent and descent in sun exposure. Starting at a minimal level of 1 at 07:00, the index gradually climbs to reach its peak of 9 at 13:00, signaling the highest risk for sun damage. From 10:00 onward, the intensity surges, hitting 8 at noon and then slightly decreasing in the afternoon to 7 at 15:00. As the sun begins its descent, the UV Index tapers off, dropping to 2 by 18:00 and finally returning to 1 by 19:00. Be mindful and consider protective measures during the midday hours when UV exposure is at its highest!

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	3	moderate	30 min
10:00	5	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	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	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Westport

Throughout the year, UV exposure varies significantly, peaking during the summer months. The high-risk months for UV radiation are from May to August, where the UV Index reaches very high levels (9) for three consecutive months. In these months, the recommended burn time is as low as 15 minutes, indicating a critical need for sun protection. As spring approaches, the UV Index increases from a low of 2 in January to a high of 6 in April, where precautions should start to be taken seriously. By September, the UV Index begins to decline, dropping to 7, but remains in the high category. Visitors and residents should therefore remain vigilant and adopt sun safety measures during peak months by wearing sunscreen, protective clothing, and seeking shade whenever possible, especially when outdoor activities are planned.

Monthly Maximum UV Index for Westport, United States

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

The table above highlights how UV exposure in Westport 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.

Westport'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
Westport	2	3	5	6	9	9	9	8	7	5	3	1
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