UV Index in Delta, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Delta, United States, where the climate often brings clear skies and increased sun exposure. By familiarizing yourself with daily UV levels, you can effectively prevent sunburn and protect your skin health. In Delta's semi-arid climate (BSk), UV radiation can peak dramatically—ranging from a moderate 3 in the morning to an intense 12 during midday. This information empowers you to enjoy the outdoors safely while minimizing the risk of skin damage. Be sun-smart and stay informed!

Hourly UV Index in Delta

The UV Index readings throughout the day showcase a dramatic rise and fall in sun exposure. Early morning hours, from 7:00 AM to 9:00 AM, present a safe range with values of 1 to 3, ideal for early risers. However, as the clock strikes 10:00 AM, the index skyrockets to 6, reaching a peak of 12 from 12:00 PM to 2:00 PM—a time when sun protection is crucial. As the afternoon wanes, UV levels begin to decline, with 10 at 3:00 PM, followed by a gentle descent to 1 by 7:00 PM. This daily cycle underscores the importance of being sun-savvy, especially during the midday 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	6	high	25 min
11:00	8	very high	15 min
12:00	11	extreme	10 min
13:00	12	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 min
16:00	8	very high	15 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Delta

Throughout the year, the UV Index exhibits significant seasonal variations, peaking during the summer months of May to August, where it reaches extremes of 11 to 12. The highest risk occurs in May, June, and July, with burn times as short as 10 minutes under these conditions. March and April also present considerable UV exposure, categorized as very high, with burn times of just 15 minutes. Visitors and residents should exercise caution from late winter through summer, especially during these high-risk months, by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen regularly to minimize the risk of skin damage. As the season transitions into fall and winter, UV levels decrease, offering more moderate exposure from October to December.

Monthly Maximum UV Index for Delta, United States

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

The table above highlights how UV exposure in 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.

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
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
Delta	4	6	8	10	11	12	12	11	10	7	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5