UV Index in La Union, United States

Last updated: May 3, 2025

Understanding the UV Index is essential for residents and visitors of La Union, United States, where the sun shines brightly in a BWk climate. Awareness of UV levels can significantly help in preventing sunburn and maintaining overall skin health. With peak UV exposure often reaching dangerously high levels—like a maximum of 13 at 1 PM—it's crucial to stay informed about UV risks throughout the day. By knowing when to seek shade or apply sunscreen, you can enjoy the beautiful outdoor activities that La Union has to offer while protecting your skin from potential harm.

Hourly UV Index in La Union

The UV Index throughout the day presents a striking trajectory of rising intensity, peaking at 1 PM with a remarkable 13. Starting with a gentle 1 at 7 AM, the sun's rays gradually become more potent, hitting 10 at 11 AM and soaring to a critical 12 by noon. As the afternoon unfolds, the intensity remains strong, fluctuating between 12 and 9 from 1 PM to 3 PM, before gracefully tapering off. By 5 PM, the UV Index descends to 4, and as the day closes, it winds down to a soft 1 by 7 PM. Stay vigilant during those midday hours to protect your skin from the sun's fierce embrace!

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

Throughout the year, the UV Index exhibits significant seasonal variations, with the highest values typically occurring from March to September. This period is particularly critical for sun exposure, as March begins with a UV Index of 10, escalating to a peak of 13 in May, June, and July, and only slightly decreasing to 11 in September. The months of April to August are classified as having an extreme exposure category, with a rapid burn time of just 10 minutes, indicating a high risk of skin damage. Conversely, in the winter months of January and December, the UV Index lowers to 5, categorized as moderate, allowing for longer burn times of 30 minutes. Visitors and residents should exercise increased caution, particularly in the high-risk months of March to September, ensuring to wear sunscreen, seek shade, and limit direct sun exposure, especially during midday hours.

Monthly Maximum UV Index for La Union, United States

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

The table above highlights how UV exposure in La Union 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.

La Union'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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5
La Union	5	7	10	12	13	13	13	12	11	9	6	5