UV Index in Hollister, United States

Last updated: July 2, 2025

Understanding the UV Index in Hollister, United States, is crucial for protecting your skin from harmful ultraviolet rays. With UV levels peaking between 11 AM and 1 PM—reaching a maximum of 11—awareness can help you prevent sunburn and maintain long-term skin health. The Mediterranean climate of Hollister brings plenty of sunny days, making it essential to be mindful of UV exposure risks during peak hours. Stay informed and safeguard your skin while enjoying the beautiful outdoors!

Hourly UV Index in Hollister

The UV Index for today shows a dramatic rise as the sun ascends into the sky. Starting at a mild 1 by 07:00, the index gradually builds, reaching 3 by 09:00 and peaking at an intense 11 at 13:00—a level where sun protection is crucial. From this pinnacle, the values start to decline, tapering off to 10 at 14:00 and then gradually decreasing through the afternoon and evening, with values of 6 at 16:00 and sliding down to 1 by 19:00. Plan your outdoor activities accordingly, and 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	2	low	45 min
09:00	3	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	9	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 Hollister

As the seasons change, so too does the UV Index, which significantly impacts sun exposure risks. January kicks off with a moderate UV Index of 4, allowing for 30 minutes of safe sun exposure. However, by February, the index rises to 6 (high), reducing burn time to 25 minutes. The months of March to August see a sharp increase, peaking at an extreme level of 11 in both June and July, where only 10 minutes of exposure can lead to burns. April and May also remain perilously high with indices of 9 and 10, respectively. As fall approaches, the UV Index begins to decrease slowly, but September to October still pose a risk with very high readings of 9 and 8. The year's end brings moderate levels again in November and December, with UV Indices of 5 and 3, respectively. It's crucial for residents and visitors to stay informed and protect themselves, especially during the high-risk months from March to August, where proper sun protection, such as sunscreen and protective clothing, is strongly advised.

Monthly Maximum UV Index for Hollister, United States

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

The table above highlights how UV exposure in Hollister 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.

Hollister'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
Hollister	4	6	8	9	10	11	11	10	9	8	5	3
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