UV Index in Harlan, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Harlan, United States, where the climate presents unique sun exposure challenges. With peak UV levels often reaching 10 during the midday hours, awareness of these figures can play a vital role in preventing sunburn and maintaining skin health. As Harlan experiences a humid continental climate (Dfa), residents should be particularly mindful of their exposure, especially during the warmer months. Staying informed about UV levels can empower individuals to enjoy the outdoors safely while minimizing the risks associated with harmful UV rays.

Hourly UV Index in Harlan

The UV Index for today presents a clear picture of sunshine intensity hours. Starting off at a gentle 1 by 7:00 AM, the index begins to rise steadily, reaching 2 by 8:00 AM. By 10:00 AM, it escalates to a moderate 5, but the real peak occurs between 12:00 PM and 2:00 PM, where it hits a soaring 10—a sign to seek shade and wear protection! As afternoon transitions to evening, the index gracefully descends, dropping to 4 by 5:00 PM, and settling at a soft 1 by 7:00 PM, making for a comfortable end to the day. Stay safe and enjoy your sunlit hours while keeping an eye on that UV Index!

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	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	9	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 Harlan

The seasonal UV changes reveal a significant increase in ultraviolet exposure from winter to summer, peaking in June with an extreme UV Index of 11 and a burn time of just 10 minutes. High-risk months include April to August, where residents and visitors should take extra precautions due to very high UV levels. Specifically, in April (UV Index 8) and May (UV Index 10), the burn time decreases sharply to 15 minutes, while June remains critical with its extreme rating. As summer transitions to autumn, UV exposure diminishes, lowering to a high level in October (UV Index 6). To protect against skin damage, it is advisable to wear sun protection, such as sunscreen and UV-blocking clothing, especially during peak hours in these high-risk months.

Monthly Maximum UV Index for Harlan, United States

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

The table above highlights how UV exposure in Harlan 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.

Harlan'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
Harlan	3	5	6	8	10	11	10	9	8	6	4	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