UV Index in Irmo, United States

Last updated: July 2, 2025

Understanding the UV Index in Irmo, United States, is essential for protecting your skin and maintaining overall health. UV radiation can lead to sunburn and long-term skin problems, making it crucial to stay informed about daily exposure levels. Irmo's humid subtropical climate (Cfa) typically brings warm summers and extended periods of sunshine, resulting in higher UV index readings. With peak values reaching a high of 11 from noon to 2 PM, being aware of these levels can help you enjoy the outdoors safely while minimizing the risk of skin damage. Always remember to check the UV index before heading out, and take the necessary precautions to protect yourself!

Hourly UV Index in Irmo

The UV Index for the day showcases a dramatic increase in intensity as the sun climbs higher in the sky. Starting at a mild 1 at 07:00, it remains low throughout the morning, only reaching 3 by 09:00. However, by 11:00, the index skyrockets to 8, peaking at an intense 11 from 13:00 to 14:00. As the afternoon wanes, the UV levels gradually decrease, dropping to 4 by 17:00 and tapering off to 1 once again by 19:00. It's clear that midday hours pose the greatest risk for sun exposure, making it crucial to take precautions during the peak hours from 11:00 to 14:00.

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	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	11	extreme	10 min
15:00	10	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 Irmo

The UV Index exhibits a notable seasonal change, peaking in the summer months and significantly dropping during winter. High-risk months are primarily from May to August, where the UV Index reaches extreme levels of 10 to 11, resulting in a burn time of just 10 minutes. Visitors and residents are strongly advised to take precautions during these high UV levels, including seeking shade, wearing protective clothing, and applying sunscreen regularly. As the seasons transition, the UV Index decreases, making January and December the safest months, with a moderate exposure category and a burn time of 30 minutes. However, caution is still advised during the spring and fall months, where UV levels remain elevated and can lead to skin damage with minimal exposure.

Monthly Maximum UV Index for Irmo, United States

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

The table above highlights how UV exposure in Irmo 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.

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