UV Index in Columbia, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Columbia, United States, where the climate can lead to high levels of sun exposure. With peak UV levels often exceeding 10 during summer months, being aware of these readings is essential for preventing sunburn and protecting your skin health. The warm, humid climate typical of Columbia presents unique risks, particularly midday when UV intensity peaks. By keeping an eye on the UV Index, you can enjoy the outdoors responsibly while safeguarding your well-being.

Hourly UV Index in Columbia

The hourly UV Index reveals an intense progression of sun exposure throughout the day, reaching its peak at 2 PM with a striking level of 12. Starting from a minimal 1 at 7 AM and 8 AM, the index gradually rises, hitting 4 by 10 AM and soaring to 7 at 11 AM. By noon, the UV Index spikes to 10, urging caution for sun-seekers. The afternoon brings the highest risk, with 11 at 1 PM and a blazing 12 at 2 PM, before it begins to decline. Fortunately, from 3 PM onwards, the UV levels decrease to 10, then to 8 at 4 PM, 5 at 5 PM, and tapering down to 1 by 7 PM, signaling a safe reprieve from the sun's intensity. Stay vigilant during the midday hours to protect your skin!

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	7	high	25 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 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 Columbia

Throughout the year, UV levels fluctuate, with high-risk months primarily falling between February and August. Notably, April to July feature an extreme UV Index of 11 to 12, necessitating precautions to limit sun exposure to just 10 minutes during peak hours. February and March present significant risks as well, with very high UV levels of 8 and 9, leading to burn times of only 15 minutes. To safeguard your skin, residents and visitors are advised to minimize exposure during peak sun hours, wear protective clothing, and use broad-spectrum sunscreen. As the year progresses, November and December offer lower UV levels, classified as high and moderate, respectively, allowing for longer safe exposure times of 25 to 30 minutes.

Monthly Maximum UV Index for Columbia, United States

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

The table above highlights how UV exposure in Columbia 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.

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