UV Index in Brooklyn, United States

Last updated: May 3, 2025

In Brooklyn, United States, staying informed about the UV Index is crucial for protecting your skin and preventing sunburn. With peak UV levels reaching a high of 9 during the mid-afternoon, understanding these UV fluctuations can help you make smart choices about sun exposure. The Dfb climate of Brooklyn offers a mix of sunny and cloudy days, leading to varying UV risks that can impact your skin health. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while safeguarding your skin from harmful UV rays.

Hourly UV Index in Brooklyn

As the sun rises, the UV Index starts low at 1 from 7:00 AM and remains at this safe level until 9:00 AM. However, as the day progresses, it climbs notably, peaking at 9 between 1:00 PM and 2:00 PM, signaling a high risk of harm from unprotected sun exposure. With a maximum reading of 8 at 12:00 PM, it's crucial to take precautions. By late afternoon, specifically at 4:00 PM, the UV Index begins its descent, falling to 6, and continues to decrease to a low of 1 by 7:00 PM. As you enjoy your day, remember to protect your skin during those peak hours!

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	3	moderate	30 min
10:00	4	moderate	30 min
11:00	7	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	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Brooklyn

Throughout the year, UV exposure fluctuates significantly, with the highest risk occurring during the summer months. From April to August, the UV Index reaches very high levels, peaking at 10 in June and July, where the burn time is just 15 minutes. The spring months of March and February present a moderate risk, but as we transition into April, caution is essential. Visitors and residents are advised to take protective measures, particularly from April to September, when UV exposure can cause skin damage in a short span of time. In contrast, the winter months, such as December (UV Index 2) and January (UV Index 3), present a much lower risk with longer burn times. Therefore, for outdoor activities, especially during peak UV months, wearing sunscreen, protective clothing, and seeking shade are highly recommended to minimize exposure.

Monthly Maximum UV Index for Brooklyn, United States

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

The table above highlights how UV exposure in Brooklyn 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.

Brooklyn'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
Brooklyn	3	5	5	9	9	10	10	9	8	6	4	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