UV Index in Marion, United States

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents of Marion, United States, where sunny days can come with hidden risks. As the UV levels vary throughout the day, being informed helps you prevent sunburn and protect your skin health. With a Cfb climate that features moderate sunshine, Marion’s UV exposure can reach highs of 11 midday, emphasizing the need to monitor these levels consistently. Stay aware of the UV Index to safeguard your skin and enjoy the outdoors safely!

Hourly UV Index in Marion

The UV Index throughout the day reveals a fascinating journey of sun exposure. Starting at a gentle level of 1 at 07:00 and 08:00, the index begins to rise steadily, hitting 3 by 09:00. As the sun reaches its peak, the intensity escalates dramatically, soaring to 10 at noon and peaking at 11 from 13:00 to 14:00—ideal for sun protection measures! The afternoon sees a gradual decline, with values dropping to 9 at 15:00, then further diminishing to 2 by 18:00, and finally settling back at 1 by 19:00. Whether lounging in the sun or engaging in outdoor activities, awareness of this UV landscape is essential for safe enjoyment!

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	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	10	very high	15 min
15:00	9	very high	15 min
16:00	7	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 Marion

The UV Index experiences significant seasonal fluctuations, peaking during the summer months and dramatically dropping in winter. From January to February, the index rises from 4 (moderate) to 6 (high), with a corresponding decrease in burn time from 30 minutes to 25 minutes. The most critical period for UV exposure occurs from March to July, where the index ranges from 8 to 11, categorizing these months as very high to extreme risk, with a burn time plummeting to just 10 minutes in extreme cases. August and September remain high at 10, while October sees a decrease to 8 (very high). As temperatures drop, November and December are marked by moderate UV levels of 5 and 3, with longer burn times of 30 minutes. Residents and visitors should exercise caution and apply sun protection during the high-risk months of March through October, especially in the summer when even brief exposure can lead to skin damage.

Monthly Maximum UV Index for Marion, United States

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

The table above highlights how UV exposure in Marion 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.

Marion'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
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Marion	4	6	8	11	11	11	11	10	10	8	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5