UV Index in Butler, United States

Last updated: June 2, 2025

In Butler, United States, staying aware of the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. Understanding UV levels can significantly impact your health, helping to prevent sunburn and reduce the risk of skin cancer. With Butler’s Cfa climate, characterized by warm and humid summers, residents face higher UV exposure, especially during midday hours when the index peaks at a striking 11. By regularly checking the UV Index, you can take proactive measures to safeguard your skin, ensuring fun and safe outdoor experiences year-round.

Hourly UV Index in Butler

The UV Index climbs steadily throughout the morning, starting at a modest 1 at 7:00 AM and reaching a more intense 3 by 9:00 AM. As the sun rises higher, the index peaks at an alarming 11 at 1:00 PM, indicating severe UV exposure. This high risk is only slightly alleviated in the following hours, where it drops to 10 at 2:00 PM and gradually decreases to 4 by 5:00 PM. As the evening approaches, the UV Index dips to low levels of 2 at 6:00 PM and returns to 1 by 7:00 PM. Remember, during the midday hours, adequate sun protection is crucial to safeguard your skin from harmful UV rays!

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	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 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 Butler

Throughout the year, the UV Index exhibits significant seasonal variations, with high-risk months primarily from April to August. During this period, the UV Index reaches its peak, with values of 10 to 11, categorizing the exposure as very high to extreme, resulting in shorter burn times of just 10 to 15 minutes. Visitors and residents should be particularly cautious during these months, applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours. As a general guideline, January, February, and December see moderate levels of UV exposure, while March and October transition into the high exposure category; therefore, awareness and proper sun protection are essential year-round.

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
Butler	3	5	6	10	10	11	11	10	9	7	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