UV Index in Bismarck, United States

Last updated: May 3, 2025

In Bismarck, United States, being aware of the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. Understanding UV levels is essential for preventing sunburn and maintaining overall skin health, especially during the summer months when the index can peak at a significant 9 around midday. With Bismarck’s Dfb climate, residents should be especially vigilant when spending time outdoors, as the sun's intense rays can elevate the risk of skin damage if proper precautions aren't taken. Stay informed and enjoy the sun safely!

Hourly UV Index in Bismarck

The UV Index today reveals a dynamic dance of sunlight, starting with a gentle 1 at 07:00, gradually climbing to an energetic 9 by 13:00. As the day progresses, the index peaks at a blazing 8 during the early afternoon before beginning its descent into softer, safer levels. By 18:00, the UV Index drops back to a comfortable 2, and by the evening at 19:00, it returns to a mellow 1. This indicates that while mid-afternoon brings intense sun exposure, the early morning and late evening provide much-needed respite. Stay protected during those peak hours, and enjoy the more gentle sunlight as the day winds down!

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	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	6	high	25 min
12:00	8	very high	15 min
13:00	9	very high	15 min
14:00	8	very high	15 min
15:00	7	high	25 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 Bismarck

Throughout the year, UV levels fluctuate significantly, with the highest exposure occurring during the summer months of April to August. Notably, April to July experience a very high UV Index of 9 to 10, indicating a burn time of just 15 minutes. August also remains at a UV Index of 9, warning that prolonged exposure can lead to sunburn. The high-risk months are therefore from April to August, where it's crucial for visitors and residents alike to take precautions such as wearing sunscreen, protective clothing, and seeking shade during peak hours. As the year progresses into September and October, UV levels decrease but still warrant moderate caution, particularly in early autumn. Ultimately, staying informed about the seasonal changes in UV exposure is vital to protect skin health throughout the year.

Monthly Maximum UV Index for Bismarck, United States

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

The table above highlights how UV exposure in Bismarck 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.

Bismarck'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
Bismarck	2	4	5	9	9	10	9	9	7	5	3	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5