UV Index in Ortonville, United States

Last updated: July 2, 2025

In Ortonville, United States, staying informed about the UV Index is crucial for promoting skin health and preventing sunburn. Understanding UV levels helps residents make safer choices when enjoying outdoor activities, especially during peak exposure times. With a Dfb climate characterized by warm summers, Ortonville experiences significant UV radiation, particularly from late morning to early afternoon, when the index can reach as high as 10. By monitoring the UV Index, you can protect your skin and enjoy the beautiful outdoors while minimizing health risks associated with excessive sun exposure.

Hourly UV Index in Ortonville

The UV Index starts the day low at 1 around 7:00 AM, showing a friendly sun for early risers. As the day progresses, sunlight gains intensity, peaking at 10 between 1:00 PM and 2:00 PM—the perfect time for sun lovers to enjoy outdoor activities, but remember, sunscreen is a must! After this peak, the index gradually decreases, dropping to 3 by 6:00 PM, and finally returning to 1 as the sun sets around 7:00 PM. Stay informed and protect your skin during those high Index 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	3	moderate	30 min
10:00	4	moderate	30 min
11:00	6	high	25 min
12:00	8	very high	15 min
13:00	10	very high	15 min
14:00	10	very high	15 min
15:00	8	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 Ortonville

As the seasons change, so do UV levels, highlighting periods of higher risk for sun exposure. From January to March, the UV Index remains low to moderate, with February seeing an increase. April to August marks the peak high-risk months, featuring very high UV levels, particularly in June and July, where the burn time drops to a remarkable 15 minutes. September transitions into a high UV category, while October to December see a gradual decline, returning to low risk by year's end. To protect yourself, especially during the high UV months of April through August, it is crucial to wear sunscreen, protective clothing, and seek shade to minimize exposure. Be particularly vigilant during the summer months when burn time is significantly reduced.

Monthly Maximum UV Index for Ortonville, United States

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

The table above highlights how UV exposure in Ortonville 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.

Ortonville'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
Ortonville	2	4	5	8	9	10	10	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