UV Index in Harrisville, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for the residents of Harrisville, United States, where the climate challenges you with significant sunlight exposure, particularly during the summer months. High UV levels can lead to sunburn and long-term skin damage, making it essential to stay informed about daily fluctuations. In Harrisville, typical UV Index readings peak around noon with values reaching as high as 9, indicating very high risk for harm from unprotected sun exposure. By being aware of these levels, you can better protect your skin and enjoy the beautiful outdoors safely.

Hourly UV Index in Harrisville

As the sun rises, the UV Index gradually climbs, starting at a low of 1 by 07:00 and 08:00. The real leap begins at 09:00, where it reaches 3, escalating to 4 by 10:00. As noon approaches, the UV Index peaks at an impressive 9 from 13:00 to 14:00, making it crucial to take protective measures during those hours. Afterward, it begins to taper off, dropping to 6 by 16:00, and further declining through the late afternoon and evening, eventually falling back to 1 by 19:00. For those venturing outdoors, staying vigilant to the UV levels during the midday hours is essential for skin protection!

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	4	moderate	30 min
11:00	6	high	25 min
12:00	8	very high	15 min
13:00	9	very high	15 min
14:00	9	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	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Harrisville

Throughout the year, UV exposure levels fluctuate significantly, peaking during the spring and summer months. The high-risk months, notably from April to August, feature very high UV indices ranging from 8 to 10, with only 15 minutes of safe exposure before risking sunburn. March also begins to elevate with a moderate index of 5. As autumn arrives, a gradual decline occurs, with September’s index at 7, followed by lowering values in October, November, and December. Visitors and residents are advised to take precautionary measures during the high-risk months, such as applying sunscreen, wearing protective clothing, and seeking shade, especially during midday hours to minimize the risk of UV-related health issues. Remember, even on cloudy days, UV rays can penetrate the atmosphere, so staying vigilant is key!

Monthly Maximum UV Index for Harrisville, United States

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

The table above highlights how UV exposure in Harrisville 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.

Harrisville'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
Harrisville	2	4	5	8	8	10	9	8	7	5	3	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5