UV Index in Pierre, United States

Last updated: May 3, 2025

In Pierre, United States, staying informed about the UV Index is crucial for safeguarding your skin against potential damage from the sun's harmful rays. Understanding UV levels not only helps in preventing sunburn, but it also plays a significant role in maintaining long-term skin health. Known for its Dwa climate, Pierre experiences varied UV exposure, particularly peaking between 11 AM and 3 PM, where the index can soar up to 9. By monitoring the UV Index regularly, residents can make informed decisions about sun protection, ensuring that outdoor activities are not only enjoyable but also safe.

Hourly UV Index in Pierre

As the sun rises, the UV Index begins its steady climb, starting from a mild 1 at 07:00 and remaining low throughout the morning. By 09:00, it reaches 2, but the real action begins around 10:00 when it surges to 4. The peak of the day occurs between 12:00 and 14:00, with an impressive high of 9, indicating a potent sun that demands attention and protection. As the afternoon wanes, the index gradually drops—first to 8 at 15:00, then gently declining to 6 by 16:00. The evening sun softens its glare, with the index falling to 2 at 18:00 and finally settling back to 1 by 19:00. It’s a day to embrace the sun wisely, with the highest intensity reminding us to stay protected during 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	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	9	very high	15 min
15:00	8	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 Pierre

Throughout the year, the UV Index shows notable seasonal changes, with the highest risk months occurring from April to September. During this period, the UV Index reaches very high levels of 9 or 10, particularly in May, June, and July, where the recommended burn time is just 15 minutes. In contrast, the UV Index is much lower during the winter months, peaking at 2 in January and December, suggesting a burn time of 45 minutes. As a guideline, visitors and residents should be vigilant in the spring and summer by wearing protective clothing, applying sunscreen, and seeking shade during peak hours to minimize skin damage. In the fall and winter, while the risk is lower, it's still advisable to remain aware of UV exposure, particularly on sunny days.

Monthly Maximum UV Index for Pierre, United States

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

The table above highlights how UV exposure in Pierre 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.

Pierre'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
Pierre	2	5	5	7	9	10	10	9	8	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