UV Index in Alamo, United States

Last updated: May 3, 2025

Being aware of the UV Index is crucial for residents of Alamo, United States, as it plays a vital role in sunburn prevention and maintaining skin health. Understanding UV levels can help you take necessary precautions, especially during peak hours when the UV Index reaches a maximum of 11 around noon. With Alamo's BWk climate, characterized by long, sunny days, the risk of overexposure to harmful UV rays increases significantly. By staying informed about local UV levels, you can protect yourself and enjoy the sunshine safely while minimizing the risk of skin damage.

Hourly UV Index in Alamo

The UV Index shows a dramatic rise as the sun climbs in the sky, peaking at 11 between noon and 1 PM, indicating an exceptionally high risk of harm from unprotected sun exposure. Starting the day low at a mere 1 at 7 AM, it steadily increases to 3 and then 5 by 9 AM, setting the stage for the intense midday sun. As it reaches 10 at 11 AM, it signals to outdoor enthusiasts to seek shade or don protective gear. The index begins to wane after 1 PM, dropping to 10 at 2 PM, and declining further to 3 by 5 PM, before settling back to 1 after 6 PM. To stay safe under the scorching sun, be sure to take precautions during those peak 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	3	moderate	30 min
09:00	5	moderate	30 min
10:00	7	high	25 min
11:00	10	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 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 Alamo

Throughout the year, the UV Index exhibits significant seasonal variations, peaking during the summer months of May to August, where it reaches extremes of 11 to 12. The highest risk occurs in May, June, and July, with burn times as short as 10 minutes under these conditions. March and April also present considerable UV exposure, categorized as very high, with burn times of just 15 minutes. Visitors and residents should exercise caution from late winter through summer, especially during these high-risk months, by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen regularly to minimize the risk of skin damage. As the season transitions into fall and winter, UV levels decrease, offering more moderate exposure from October to December.

Monthly Maximum UV Index for Alamo, United States

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

The table above highlights how UV exposure in Alamo 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.

Alamo'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
Alamo	4	6	8	10	11	12	12	11	10	7	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5