UV Index in Hawthorne, United States

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents of Hawthorne, United States, where sunny skies and a BSk climate lead to significant sun exposure throughout the year. Being aware of the UV levels not only helps in preventing painful sunburns, but it also plays a vital role in maintaining long-term skin health. As the UV Index can peak at a high 12 around noon, Hawthorne's residents must take proactive measures, especially during the most intense hours, to shield themselves from harmful rays and enjoy the great outdoors safely.

Hourly UV Index in Hawthorne

As the sun rises, the UV Index begins its ascent, starting at a mild 1 at 07:00 and gradually climbing throughout the morning. By 09:00, it reaches a moderate 5, signaling the need for some sun protection. The intensity peaks around 12:00, with a high of 12, which indicates very high levels of UV radiation. Hereafter, the index gently declines, tapering off to 9 by 15:00, before easing down to 4 by 17:00. As the evening unfolds, the UV risk diminishes, dropping to 2 by 18:00 and finally returning to 1 at 19:00. This hourly UVI data underscores the importance of being mindful of sun exposure, especially during the midday hours when UV levels are at their 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	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Hawthorne

As the seasons change, so do the UV Index levels, indicating varying risks of sun exposure. The high-risk months are from March to August, with April, May, June, and July classified as having an extreme UV Index of 12. During these months, individuals can burn in as little as 10 minutes of unprotected sun exposure. It’s crucial for both visitors and residents to take precautions, such as wearing sunscreen, protective clothing, and seeking shade, especially during peak hours. Conversely, from November to February, the UV Index drops to moderate levels, allowing for safer outdoor activities with less risk of sunburn, although it's still advisable to remain cautious.

Monthly Maximum UV Index for Hawthorne, United States

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

The table above highlights how UV exposure in Hawthorne 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.

Hawthorne'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
Hawthorne	4	6	8	10	12	12	12	11	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5