UV Index in Roundup, United States

Last updated: July 2, 2025

In Roundup, United States, awareness of the UV Index is crucial for safeguarding your skin health, especially in a region characterized by a BSk climate, which can lead to intense sun exposure. Understanding UV levels not only helps in preventing painful sunburns but also plays a vital role in reducing the long-term risks of skin damage and skin cancer. With the UV Index reaching highs of 10 in midday hours, it’s essential for residents and visitors alike to keep track of these levels to enjoy the sun safely while protecting their skin from harmful effects.

Hourly UV Index in Roundup

As the sun rises, the UV Index gradually climbs, beginning at a mild 1 at 7:00 AM. By 9:00 AM, it reaches 3, prompting early risers to consider sun protection. The intensity peaks at 1:00 PM with a maximum of 10, signaling the most hazardous conditions for unprotected skin. As the afternoon unfolds, the index dips from 9 at 2:00 PM to 6 by 4:00 PM, offering a brief respite. As the day winds down, the UV rays decrease, falling to 2 by 6:00 PM and returning to a safe 1 by 7:00 PM. Stay mindful of these fluctuations to enjoy the sun while safeguarding your skin!

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	7	high	25 min
12:00	9	very high	15 min
13:00	10	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 Roundup

Throughout the year, the UV Index exhibits significant seasonal changes, with the highest values observed in April through September. These months, notably April (9), May (9), June (10), July (10), August (9), and September (8), fall into the very high exposure category, with a burn time of just 15 minutes. This indicates a heightened risk for sunburn, especially between late spring and early fall. Conversely, the winter months of January (2) and December (2), along with November (3), present low to moderate UV levels, where residents and visitors can enjoy safer outdoor activities with burn times of 30 to 45 minutes. To minimize the risk of UV-related health issues, it is advised that individuals take protective measures, such as wearing sunscreen, hats, and protective clothing, during the high-risk months of late spring and summer.

Monthly Maximum UV Index for Roundup, United States

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

The table above highlights how UV exposure in Roundup 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.

Roundup'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
Roundup	2	5	5	9	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