UV Index in Unionville, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Unionville, United States, where the Cfa climate can lead to varying UV exposure throughout the year. With peak UV levels often reaching as high as 10 around midday, being aware of these levels is vital for preventing sunburn and safeguarding your skin health. Consistent UV exposure can have long-term consequences, making it essential to monitor daily UV readings, especially during the summer months when risks are elevated. By staying informed about the UV Index, you can enjoy the sunny Unionville outdoors while protecting your skin from harmful rays.

Hourly UV Index in Unionville

As the day unfolds, the UV Index reveals a dynamic pattern that encourages cautious sun exposure. Starting gently at 1 at 07:00, the intensity slowly climbs to a moderate 2 by 08:00. However, the real ascent begins at 09:00, when the index reaches 4. The peak occurs between 12:00 and 13:00, with an impressive 10, indicating a high risk of harm from unprotected sun exposure. Following this peak, the UV levels gradually decline, dipping to 9 at 14:00 and then decreasing further to 3 by 17:00. As evening approaches, the UV Index wanes to 1 by 18:00 and 19:00, emphasizing the importance of smart sun safety, especially during the midday hours when the sun's rays are most potent.

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	10	very high	15 min
13:00	10	very high	15 min
14:00	9	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 Unionville

Throughout the year, UV Index levels fluctuate significantly, with the highest values occurring in the summer months. Notably, June and July reach an extreme UV Index of 11, where burn time is reduced to just 10 minutes. The risk remains high in March through August, characterized by very high UV levels (8 to 10) and quick burn times ranging from 15 to 25 minutes. Conversely, the winter months of January, November, and December see moderate UV levels (3 to 5) with burn times extending to 30 minutes. Visitors and residents should take precautions, especially between March and August, by seeking shade, wearing protective clothing, and applying sunscreen regularly to mitigate the risk of skin damage.

Monthly Maximum UV Index for Unionville, United States

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

The table above highlights how UV exposure in Unionville 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.

Unionville'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
Unionville	3	6	8	10	10	11	11	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