UV Index in Columbia, United States

Last updated: May 3, 2025

Staying informed about the UV Index in Columbia, United States is crucial for maintaining healthy skin and preventing sunburn. Understanding UV levels helps residents and visitors alike to take necessary precautions against harmful sun exposure, especially during peak hours when the index soars to 11 around noon. With a Cfa climate that features warm summers and moderate humidity, Columbia presents unique UV risks that can easily catch anyone off guard. Make it a habit to check the UV Index regularly to enjoy the outdoors safely while protecting your skin's health!

Hourly UV Index in Columbia

As the sun rises, the UV Index begins its ascent, starting at a mild 1 at 7:00 AM. By 9:00 AM, it climbs to a moderate 4, indicating a gradual surge in sun intensity. The peak arrives at 12:00 PM, where it spikes to a striking 10, suggesting that protective measures are essential. The intensity remains high through 1:00 PM with a peak of 11, before gradually tapering off. By 4:00 PM, the index drops to 5, and as the day winds down, it declines to a more manageable 1 by 7:00 PM. This hourly UVI data underscores the importance of sun safety, particularly during the midday hours. Remember to protect your skin when the sun is at its strongest!

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	4	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Columbia

As the seasons change, so does the UV Index, significantly impacting sun exposure and skin health. Notably, high-risk months occur between March and August, where UV levels reach their peak, especially in May and July with extreme categories (11), indicating a burn time as short as 10 minutes. From February to October, sun exposure should be approached with caution, as the index consistently marks very high to extreme levels. It is crucial for both visitors and residents to prioritize sun safety during these months by seeking shade, wearing protective clothing, and applying sunscreen regularly. In contrast, the lower-risk months of January, November, and December present moderate levels, but it is always wise to remain vigilant about UV exposure.

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
Columbia	4	6	8	10	11	10	11	10	9	8	5	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