UV Index in Hartwell, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Hartwell, United States, where the warm Cfa climate often results in heightened sun exposure. By monitoring UV levels, you can better protect your skin from harmful effects, such as sunburn and long-term health risks like skin cancer. As Hartwell sees peak UV Index values reaching as high as 11 during midday hours, being aware of solar intensity can help you make informed decisions about sun safety, ensuring your outdoor activities are both enjoyable and safe.

Hourly UV Index in Hartwell

As the sun rises, the UV Index begins its steady climb, starting from a gentle 1 at 07:00. By 09:00, it lifts to 3, and by 10:00, it surges to 5, marking the start of peak sun exposure. The intensity reaches its pinnacle at 13:00, with a blistering 11—a reminder to take precautions! Despite a slight dip to 10 at 14:00, the UV rays remain strong until 16:00, when they gently descend to 7. As the day wanes, the levels continue to fall, reaching a safe 1 by 19:00. Stay protected during those midday hours, when the sun is at its fiercest!

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	5	moderate	30 min
11:00	7	high	25 min
12:00	9	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	9	very high	15 min
16:00	7	high	25 min
17:00	5	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Hartwell

As the seasons change, the UV Index demonstrates considerable variation, impacting burn potential and risk levels for skin exposure. The highest risk months occur from March to August, with values peaking at 11 during May, June, and July, indicating an extreme exposure category with a burn time of just 10 minutes. February marks a shift into a high risk category, while September through November gradually decreases the UV levels, transitioning back to moderate by December. It is crucial for visitors and residents alike to exercise caution during these high-risk months by wearing protective clothing, applying sunscreen regularly, and seeking shade to mitigate the potential for skin damage.

Monthly Maximum UV Index for Hartwell, United States

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

The table above highlights how UV exposure in Hartwell 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.

Hartwell'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
Hartwell	4	7	8	10	11	11	11	10	9	8	6	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5