UV Index in Box Elder, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Box Elder, United States, where the sun shines brightly in a Dfa climate zone. With UV levels peaking at 11 during midday hours, awareness of these fluctuations can make a significant difference in protecting yourself from harmful sun exposure. Knowing when the UV Index is high is essential for preventing sunburn and promoting better skin health, ensuring you enjoy the outdoors safely. Given Box Elder's typical climate and exposure risks, staying informed about UV levels helps you take the necessary precautions to shield your skin and maintain overall well-being.

Hourly UV Index in Box Elder

The UV Index steadily climbs as the day progresses, starting from a mild 1 at 7:00 AM and reaching a peak of 11 by 1:00 PM. Sun-seekers and outdoor enthusiasts should be mindful, as the index hits a high of 10 at 12:00 PM, signaling significant UV exposure. After this peak, the index gradually decreases, dropping to 8 by 3:00 PM, and continuing to decline to 1 by 7:00 PM. For safe sun enjoyment, it’s best to take precautions during those high UV hours, particularly between 11:00 AM and 2:00 PM. Remember to sport your hats and sunscreen!

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	10	very high	15 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 Box Elder

Throughout the year, UV levels exhibit significant seasonal changes, with the highest risk months occurring from April to August, when the UV Index reaches extremely high levels (9-11). Notably, June and July are the peak months, with an index of 11, indicating extreme exposure risks and a burn time as short as 10 minutes. As the year progresses, UV levels begin to decline in August and gradually drop to moderate levels by October, November, and December, where burn times increase significantly. Visitors and residents should take precautionary measures during high UV months by wearing protective clothing, applying sunscreen regularly, and minimizing sun exposure during peak hours, especially from late spring through summer.

Monthly Maximum UV Index for Box Elder, United States

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

The table above highlights how UV exposure in Box Elder 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.

Box Elder'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
Box Elder	3	5	6	9	9	11	11	10	8	5	3	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