UV Index in Marengo, United States

Last updated: July 2, 2025

Understanding the UV Index is essential for residents of Marengo, United States, where sun exposure can bring both enjoyment and risks. With a climate classified as Cfa, the region experiences warm summers, leading to higher UV levels during the midday hours. By staying informed about UV levels, you can effectively prevent sunburn and protect your skin health, ensuring that fun in the sun doesn't come at a cost. Notably, the UV Index peaks at 10 between noon and 2 PM, indicating a significant risk for harm from unprotected sun exposure. Staying vigilant about these levels can help you enjoy the outdoors safely!

Hourly UV Index in Marengo

The UV Index starts off gentle in the early hours, peaking at 1 around 07:00 and 08:00. As the sun ascends, it gradually climbs to reach 2 by 09:00 and then surges to 4 by 10:00. A significant spike occurs around 11:00, peaking at 6, before reaching its zenith of 10 from 13:00 to 14:00—a crucial time for sun protection. As the afternoon wanes, the index begins to decline, tapering down to 7 at 16:00, then to 5 by 17:00. As the sun sets, it drops to 3 at 18:00, and finally sinks back to a safe 1 by 19:00, reminding us to be cautious in the midday sun while enjoying the warm daylight.

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	9	very high	15 min
13:00	10	very high	15 min
14:00	10	very high	15 min
15:00	9	very high	15 min
16:00	7	high	25 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Marengo

Throughout the year, UV levels vary significantly, with the highest risk occurring from April to September, when the UV Index peaks at 11 in June. During these months, the burn time decreases to as little as 10 to 15 minutes, categorizing these periods as very high to extreme in terms of exposure risk. March marks the transition to higher UV levels, moving into the high-risk zone, while falling into moderate levels returns in November and December. To protect against harmful UV exposure, visitors and residents are strongly advised to wear sunscreen, protective clothing, and seek shade during peak hours, especially from April to September. Stay informed and proactive to ensure your skin's safety throughout the changing seasons.

Monthly Maximum UV Index for Marengo, United States

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

The table above highlights how UV exposure in Marengo 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.

Marengo'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
Marengo	3	5	7	10	10	11	10	10	9	6	4	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