UV Index in Swannanoa, United States

Last updated: June 2, 2025

In Swannanoa, United States, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With a climate characterized by mild temperatures and versatile seasonal changes, residents and visitors alike need to stay informed about the varying UV levels throughout the day. As the UV Index peaks at 11 around noon, the sun can pose significant risks, making awareness of these levels essential. By knowing when UV exposure is at its highest, you can take proactive measures to protect your skin and enjoy the outdoors safely!

Hourly UV Index in Swannanoa

The UV Index is a crucial indicator of sun exposure, peaking dramatically throughout the day. Starting at a mild 1 by 07:00, it escalates swiftly, reaching 3 by 09:00. The intensity rises further, hitting 5 at 10:00 and surging to a striking 8 by 11:00. The sun's power truly culminates at 12:00, with an impressive 10 on the scale, and maintains a scorching 11 through 13:00 and 14:00. As the afternoon progresses, values begin to decline from 10 at 15:00 to 7 by 16:00, and gently taper off to 5 at 17:00, finally dwindling back to 3 by 18:00 and 1 come 19:00. Stay protected during peak hours to enjoy the sunshine safely!

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

Monthly UV Index Trends in Swannanoa

Throughout the year, UV exposure varies significantly, with the highest risk months coinciding with late spring and summer. From April to July, the UV Index reaches an extreme level of 11, allowing for a burn time of just 10 minutes. Visitors and residents should be particularly cautious during these months, employing protective measures such as sunscreen, hats, and sunglasses to minimize skin damage. The risk remains high in March and August, with an index of 8 to 10, necessitating vigilance. Conversely, during the winter months of January and December, the UV Index drops to 4, categorized as moderate, providing some relief, yet it’s still wise to practice sun safety. As the seasons change, staying informed and adapting sun protection strategies is crucial for overall health.

Monthly Maximum UV Index for Swannanoa, United States

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

The table above highlights how UV exposure in Swannanoa 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.

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