UV Index in Butler, United States

Last updated: May 3, 2025

In Butler, United States, staying informed about the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels can help you take proactive steps against sunburn and long-term skin damage, which is particularly relevant in this Cfa climate zone where sunny days are frequent. With maximum UV Index values soaring to 11 during midday hours, it's crucial to recognize and respond to these risks to enjoy the outdoors safely. Whether you're planning a relaxed day in the park or an active outdoor adventure, being aware of UV conditions will empower you to protect yourself effectively.

Hourly UV Index in Butler

The UV Index for the day presents a fascinating variation as the sun climbs higher in the sky. Starting from a gentle 1 at 07:00, the intensity gradually escalates, reaching a moderate 4 by 09:00. The peak hits at 12:00 and 13:00, soaring to an intense 11, indicating a significant risk of harm from unprotected sun exposure. As the afternoon unfolds, the index begins to decline, tapering to 8 at 15:00, and by the evening, it plummets back to a 1 by 18:00. This data serves as a reminder to stay vigilant about sun safety during those peak hours when UV exposure is at its highest!

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	4	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Butler

Throughout the year, the UV Index displays notable seasonal fluctuations, particularly increasing from January to August. The highest risk occurs during the spring and summer months, with April through August recording an extreme UV Index of 11, necessitating a burn time as short as 10 minutes. March and September follow closely with very high indices of 8 and 10, respectively. Hence, visitors and residents are advised to take precautions during February to October, particularly in the peak summer months. Sunscreen application, protective clothing, and seeking shade during peak hours are essential for minimizing harmful UV exposure and preventing sunburn. In contrast, the winter months of January, November, and December see lower UV levels, offering a respite, albeit still warranting moderate protection.

Monthly Maximum UV Index for Butler, United States

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

The table above highlights how UV exposure in Butler 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.

Butler'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
Butler	4	7	8	11	11	11	11	11	10	8	6	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5