UV Index in Herriman, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Herriman, United States, where the climate's Cfa classification leads to varying sun exposure throughout the year. With UV levels capable of reaching as high as 12 during peak hours, it's essential to grasp the significance of these readings—not only for preventing painful sunburns but also for promoting long-term skin health. By paying attention to the UV Index, Herriman residents can take proactive measures against potential skin damage, ensuring safe enjoyment of their outdoor activities under the sun.

Hourly UV Index in Herriman

Starting at dawn, the UV Index begins its ascent, reaching a modest 1 by 07:00. As the sun rises higher, it intensifies, peaking at a thrilling 12 by 13:00—the perfect time for sun protection! The intensity gradually subsides, dipping to 10 by 15:00 and further declining as evening approaches, settling back to 1 by 19:00. From 08:00 to 11:00, UV levels rise steadily; then, from 14:00 onward, a noticeable decrease provides a gentle reminder of the sun's shifting power throughout the day. Remember, staying cautious during peak hours is key to enjoying a safe day outdoors!

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	8	very high	15 min
12:00	10	very high	15 min
13:00	12	extreme	10 min
14:00	11	extreme	10 min
15:00	10	very high	15 min
16:00	8	very high	15 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Herriman

Throughout the year, the UV Index presents significant seasonal changes that indicate varying levels of sun exposure risk. From January to March, the UV Index begins to rise, peaking in April—a month categorized as very high with a burn time of just 15 minutes. The high-risk months for UV exposure are May, June, July, and August, where the Index reaches an extreme level of 12 and burn times are as short as 10 minutes. As the year progresses into September, the UV Index drops to 9, still considered very high. By late fall and winter months, the risk decreases significantly, ending the year with a UV Index of 3 in December. It is crucial for visitors and residents alike to practice sun safety during high-risk months by wearing sunscreen, protective clothing, and seeking shade to minimize the risk of sunburn and skin damage.

Monthly Maximum UV Index for Herriman, United States

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

The table above highlights how UV exposure in Herriman 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.

Herriman'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
Herriman	4	6	7	10	11	12	12	11	9	6	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