UV Index in Holbrook, United States

Last updated: May 3, 2025

Understanding the UV Index in Holbrook, United States, is crucial for protecting your skin from harmful ultraviolet rays. With its BSk climate characterized by dry, sunny conditions, Holbrook often experiences elevated UV levels, particularly during peak hours. By staying informed about the UV Index, residents can take proactive measures to prevent sunburn and maintain skin health, ensuring outdoor activities remain enjoyable and safe. As UV levels soar to a maximum of 12 around midday, being aware of the differences throughout the day can help you plan your sun exposure wisely.

Hourly UV Index in Holbrook

The UV Index for the day reveals a dynamic shift in sun exposure, peaking dramatically between 11:00 AM and 1:00 PM. Starting the morning with a mild maximum of 2 at 7:00 AM, the index steadily rises, reaching 12 by midday—an indication of high risk for harm from unprotected sun exposure. As the afternoon progresses, it dips to 10 at 2:00 PM and then gradually decreases to a more moderate level of 4 by 4:00 PM. By the evening, the UV Index settles back down to 1 by 6:00 PM, signaling a safe time to enjoy the outdoors again. Be sure 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	2	low	45 min
08:00	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Holbrook

The UV Index exhibits significant seasonal variation, with peak levels occurring from March to September. During this period, particularly in April to August, the UV Index reaches extreme levels, making these the highest risk months for sun exposure. For instance, April and May have UV Index values of 11 and 12, respectively, allowing only 10 minutes of unprotected sun exposure before burns may occur. Conversely, months like January and December show a moderate UV Index of 4, where the burn time extends to 30 minutes. Visitors and residents are advised to take proactive sun safety measures, such as wearing sunscreen, protective clothing, and seeking shade, especially during the high-risk months.

Monthly Maximum UV Index for Holbrook, United States

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

The table above highlights how UV exposure in Holbrook 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.

Holbrook'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
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Holbrook	4	7	9	11	12	13	12	12	11	8	6	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5