UV Index in Presidio, United States

Last updated: May 3, 2025

Understanding the UV Index in Presidio, United States, is essential for maintaining optimal skin health and preventing sunburn. As a town situated in a BWh climate zone, Presidio experiences varying UV levels throughout the day, peaking around midday with an index of 12 at noon. This highlights the significance of monitoring UV exposure, especially during the high-risk hours from 10 AM to 2 PM, when the sun's rays are most intense. By staying informed about the UV Index, residents and visitors can take proactive measures to protect themselves from harmful effects, ensuring their outdoor activities remain safe and enjoyable.

Hourly UV Index in Presidio

The UV Index undergoes a notable progression throughout the day, beginning at a gentle 1 at 07:00, before gradually rising to a moderate 2 by 08:00. As the sun ascends, the index climbs sharply, peaking at a dizzying 13 around 13:00—a clear indication that sun protection is essential during these hours. From this pinnacle, the UV Index begins its descent, tapering off to a 9 at 15:00 and finally dwindling to 1 by the evening hours of 18:00 and 19:00. With this data in mind, it's crucial to enjoy the outdoors safely, particularly between 11:00 and 14:00, when the sun's rays are at their most intense.

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	11	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Presidio

Throughout the year, UV exposure fluctuates significantly, with high-risk months identified primarily from February to September. During these periods, the UV Index escalates to very high and extreme levels, particularly reaching a peak of 13 from April to August, where the burn time is as short as 10 minutes. Notably, March and October also display very high exposure categories, hinting at the potential for skin damage if precautions are not taken. Visitors and residents are advised to take protective measures—such as wearing sunscreen, protective clothing, and seeking shade during peak hours—to minimize the risks associated with high UV levels. In contrast, November and December present lower UV indices, categorized as high and moderate respectively, offering a safer environment for outdoor activities.

Monthly Maximum UV Index for Presidio, United States

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

The table above highlights how UV exposure in Presidio 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.

Presidio'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
Presidio	6	8	10	13	13	13	13	12	11	9	7	5