UV Index in Trussville, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Trussville, United States, where sunny days often tempt you outdoors. The UV Index measures the strength of ultraviolet radiation, helping to prevent sunburn and protect your skin health from harmful effects. In Trussville's Cfa climate, the UV levels can spike significantly, particularly between 10 AM and 2 PM, reaching a maximum of 11—a level that indicates extreme risk for sun damage. Being informed about these UV levels empowers you to take proactive measures, ensuring your time in the sun is safe and enjoyable.

Hourly UV Index in Trussville

Throughout the day, the UV Index experiences a dramatic increase, peaking at 11 between noon and 1 PM, indicating a very high level of solar radiation. Early risers will notice a gentle start, with a UV Index of just 1 at 7 AM, gradually climbing to 4 by 9 AM. As the sun reaches its zenith, values soar to 9 at 11 AM, signaling it's time to take precautions. After the peak, the UV Index begins to decline, dropping to 10 at 2 PM, then tapering off to 3 by 5 PM and resting back down to 1 by 6 PM. Staying protected in the midday sun is crucial for skin safety during these 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	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 Trussville

Throughout the year, UV Index levels exhibit significant seasonal variations, with high-risk months highlighted between March and August. During this period, the UV Index often reaches very high to extreme levels, particularly in May, June, and July, where it peaks at 11 and suggests a burn time of as little as 10 minutes. Visitors and residents are advised to take precautionary measures, such as wearing sunscreen, protective clothing, and seeking shade during peak hours. In contrast, the lower UV levels in January, December, and November present a moderate risk, with recommended exposure times of 30 and 25 minutes. As the year progresses, it’s crucial to stay informed about these UV changes and adjust sun safety practices accordingly.

Monthly Maximum UV Index for Trussville, United States

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

The table above highlights how UV exposure in Trussville 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.

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