UV Index in Keysville, United States

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents of Keysville, United States. This simple scale helps you gauge the risk of harm from unprotected sun exposure, promoting sunburn prevention and encouraging better skin health. With a Cfa climate, Keysville experiences varying UV levels throughout the day, peaking at a notably high 10 during the midday hours. Being aware of these UV levels not only protects your skin but also enhances your overall well-being as you enjoy the vibrant sunshine in this charming area. Stay informed, stay protected!

Hourly UV Index in Keysville

The UV Index reveals a dynamic ascent and descent throughout the day, peaking with intensity during midday. Starting at a gentle 1 at 7:00 AM, it climbs steadily, reaching 10 by 1:00 PM and maintaining this highest level until 2:00 PM. This critical window indicates significant sun exposure, and it’s essential to take precautions. As the afternoon progresses, the index begins to taper off, dropping to 8 at 3:00 PM, then gradually falling to 1 by 7:00 PM. This data highlights the importance of being sun-smart during the peak hours to minimize UV exposure risks.

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	7	high	25 min
12:00	9	very high	15 min
13:00	10	very high	15 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	6	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Keysville

Throughout the year, the UV Index exhibits significant seasonal changes, with higher risk months ranging from March to September. During this period, particularly in April (UV Index 9), May (UV Index 11), and especially June to August (UV Index 10), the exposure category reaches very high or extreme levels, drastically reducing burn times to as little as 10 to 15 minutes. In contrast, the winter months of January and December are at a moderate level (UV Index 3), allowing up to 30 minutes of exposure without risk of burning. To protect skin during high UV periods, it is crucial for visitors and residents to seek shade, wear protective clothing, and apply sunscreen, especially from late morning to early afternoon when UV rays are strongest. Being proactive can help everyone enjoy the sun safely.

Monthly Maximum UV Index for Keysville, United States

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

The table above highlights how UV exposure in Keysville 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.

Keysville'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
Keysville	3	6	7	9	11	10	10	10	9	7	5	3
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