UV Index in Portales, United States

Last updated: May 3, 2025

In Portales, New Mexico, understanding the UV Index is essential for maintaining skin health and preventing sunburn. With a semi-arid climate (BSk) that brings plenty of sunshine, UV exposure can reach dangerous levels, particularly during midday hours. Notably, between 11:00 AM and 1:00 PM, the UV Index peaks at 11-12, indicating a very high risk for harm from unprotected sun exposure. Staying informed about UV levels allows residents and visitors alike to take proactive measures, ensuring outdoor activities remain safe while enjoying the beautiful New Mexican landscape.

Hourly UV Index in Portales

The UV Index throughout the day showcases a striking pattern, peaking at an impressive 12 by 1 PM. Beginning with a gentle start of 1 at 7 AM, the index steadily climbs, hitting 10 by 11 AM and reaching its zenith at 12 during the warmest hour. As the afternoon progresses, a decline occurs, with the index tapering off to 8 at 3 PM, and gradually dropping to 1 by 6 PM. This indicates that the highest UV exposure is between 11 AM and 1 PM, urging outdoor enthusiasts to take precautions during these hours.

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	11	extreme	10 min
13:00	12	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	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Portales

The UV Index shows significant seasonal changes, with the highest risk months occurring from March to August, where the Index peaks at 12 during the summer. In these months, the exposure category is classified as extreme, resulting in a quick burn time of just 10 minutes. Conversely, the UV Index starts at a moderate level of 5 in January and decreases to 4 in December. It's crucial for visitors and residents to take precautions during the high-risk months by using broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak sun hours. Awareness of the UV Index can help everyone enjoy the outdoors safely while minimizing the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Portales, United States

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

The table above highlights how UV exposure in Portales 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.

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