UV Index in Big Delta, United States

Last updated: August 1, 2025

In Big Delta, United States, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding UV levels can empower residents to make informed decisions about sun exposure, especially during peak hours when the index reaches levels 4 to 5. With a Dfc climate, characterized by its cool temperate nature, the potential for UV exposure may be surprising, but it's essential to recognize that sunny days—even in cooler months—can pose significant risks. Stay informed and protect your skin by checking the UV Index daily!

Hourly UV Index in Big Delta

As the day unfolds, the UV Index begins its ascent, showcasing a gradual increase in UV radiation. Starting from a low 1 at 07:00 AM, it remains mild until 09:00 AM, when it rises to 2. The intensity peaks at 12:00 PM, reaching a maximum of 5, where protective measures become crucial. Throughout the afternoon, from 1 PM to 3 PM, it maintains this elevated level, ensuring that sun safety is a top priority. As the sun begins to set, the UV Index drops back down, descending to 4 by 4 PM and gradually easing to 2 by 7 PM. Stay vigilant and protect your skin during the high UV 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	2	low	45 min
10:00	3	moderate	30 min
11:00	4	moderate	30 min
12:00	4	moderate	30 min
13:00	5	moderate	30 min
14:00	5	moderate	30 min
15:00	5	moderate	30 min
16:00	4	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Big Delta

The seasonal UV changes present a clear pattern, with the highest UV Index values occurring during the summer months of April through September. Specifically, April to August see UV levels peaking at 5, categorized as moderate exposure risk, with a suggested burn time of just 30 minutes. In contrast, the winter months of December through February exhibit a much lower UV Index of 1, indicating a low risk for exposure with a burn time of 45 minutes. Based on this data, high-risk months for UV exposure are April through August. Visitors and residents are advised to take proper precautions during these months, including wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Big Delta, United States

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

The table above highlights how UV exposure in Big Delta 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.

Big Delta'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
Big Delta	1	1	2	4	5	5	5	5	3	2	1	1
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