UV Index in Harper, United States

Last updated: July 2, 2025

Understanding the UV Index is essential for the residents of Harper, United States, as it plays a crucial role in protecting our skin health and preventing sunburn. With the typical Cfa climate of Harper, the UV levels can soar, particularly during midday hours, making it vital to be aware of the risks associated with excessive sun exposure. For instance, you might find that between 12 PM and 2 PM, the UV Index reaches a peak of 12, signaling an increased risk of harm. By staying informed about these UV levels, you can take appropriate precautions and enjoy the sunny days while keeping your skin safe.

Hourly UV Index in Harper

The UV Index today showcases a dramatic climb as the sun rises. Starting at a low of 1 between 7:00 and 9:00, it sharply escalates to 7 at 11:00, peaking at an intense 12 from 13:00 to 14:00. This midday sun signals a high risk for skin exposure, reminding us to take precautions. As the afternoon wanes, the index gradually declines to 5 by 17:00, then settles back to 1 by 19:00. Remember to stay protected 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	5	moderate	30 min
11:00	7	high	25 min
12:00	10	very high	15 min
13:00	12	extreme	10 min
14:00	12	extreme	10 min
15:00	11	extreme	10 min
16:00	8	very high	15 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Harper

The UV Index exhibits significant seasonal variation, with the highest levels typically occurring from April to September. During these months, the UV Index reaches extremes of 11 to 12, categorizing them as extreme exposure. February through October are considered high-risk months, especially April to August, where the burn time is as short as 10 minutes. It is vital for residents and visitors to take precautions, such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize the risk of skin damage. As the UV Index decreases in the fall and winter months, November and December present lower risk, with more moderate values of 6 and 5, allowing for longer exposure times before burning occurs. Adjusting outdoor activities according to the UV index is essential for ensuring safety and health throughout the year.

Monthly Maximum UV Index for Harper, United States

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

The table above highlights how UV exposure in Harper 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.

Harper'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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5
Harper	5	8	9	11	11	12	12	12	11	9	6	5