UV Index in Summerlin South, United States

Last updated: August 1, 2025

In Summerlin South, understanding the UV Index is crucial for protecting your skin from harmful sun exposure. With maximum UV levels peaking at a staggering 12 around noon, residents and visitors alike must be vigilant to prevent sunburn and promote skin health. The arid BWk climate of Summerlin South means plenty of sunny days, which can lead to increased UV radiation risks. By staying informed about daily UV levels, you can make better choices for outdoor activities and safeguard your well-being under the sun.

Hourly UV Index in Summerlin South

As the sun rises, the UV Index begins to climb steadily, starting at a mild 1 at 07:00. By 08:00, it reaches 3, indicating a cautious approach to sun exposure. The peak of the day arrives between 11:00 and 13:00, where the UV Index skyrockets to 10 and 12, signaling a high risk of harm from unprotected sun exposure. Even as the clock ticks toward 14:00, it remains critical at 11. As the afternoon wanes, the index drops to 9 at 15:00, and continues to decline, ultimately settling back to a safe 1 by 18:00. It's essential to stay protected during the midday hours when UV radiation is at its strongest!

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	7	high	25 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 Summerlin South

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 Summerlin South, United States

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

The table above highlights how UV exposure in Summerlin South 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.

Summerlin South'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
Summerlin South	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