UV Index in Harriman, United States

Last updated: August 1, 2025

Understanding the UV Index in Harriman, United States, is crucial for safeguarding your skin and overall health. With exposure levels peaking in the midday sun, it's vital to know when the UV rays are most intense to prevent sunburn and reduce long-term skin damage. Harriman's Cfa climate typically brings warm summers and ample sunshine, making it important to stay informed about daily UV risks. By keeping an eye on the UV Index, you can enjoy the outdoors safely while protecting your skin from harmful effects.

Hourly UV Index in Harriman

The UV Index (UVI) paints a clear picture of sun intensity throughout the day. Beginning at 07:00, the index registers a low 1, making it a safe time for early risers. As the sun climbs higher, the numbers take a dramatic turn: by 11:00, the UVI jumps to 7, signaling increased sun exposure. The peak occurs between 12:00 and 14:00, where it reaches an intense 11, urging caution for outdoor activities. The intensity gradually wanes after this peak, dropping to 5 by 17:00 and returning to a mild 1 once again by 19:00. Whether planning your day or heading outdoors, it's crucial to stay sun-smart during those peak 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	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	6	high	25 min
12:00	8	very high	15 min
13:00	10	very high	15 min
14:00	10	very high	15 min
15:00	9	very high	15 min
16:00	7	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 Harriman

Throughout the year, UV exposure levels vary significantly, with high-risk months typically occurring from March to August when the UV Index reaches its peak at 11, categorized as extreme. March and April also feature very high levels, making these months crucial for sun safety awareness. Visitors and residents should be particularly cautious during this period, applying sunscreen regularly, wearing protective clothing, and seeking shade during peak hours. In contrast, the months of January, November, and December present a moderate UV Index of 3 to 5, allowing for more relaxed precautions, though it's still important to remain mindful of sun exposure. Always check local UV forecasts and adjust your sun safety practices accordingly to protect your skin year-round.

Monthly Maximum UV Index for Harriman, United States

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

The table above highlights how UV exposure in Harriman 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.

Harriman'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
Harriman	3	6	8	10	11	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