UV Index in Potrero, United States

Last updated: July 2, 2025

In Potrero, United States, staying aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you anticipate when the sun poses the greatest risk of sunburn and long-term skin damage, enabling you to take appropriate precautions. With a Mediterranean climate (Csa) characterized by sunny summers and mild winters, Potrero often sees elevated UV levels, especially between late morning and early afternoon. By staying informed about the UV Index, you can enjoy the beautiful outdoors while mitigating the risks associated with high UV exposure.

Hourly UV Index in Potrero

As the sun rises, the UV Index begins its gradual ascent, peaking dramatically at 12:00 PM with a striking score of 12—a clear indication of intense midday sun. Starting from a low 1 at 7:00 AM, the index swiftly climbs, reaching 10 by 11:00 AM, suggesting that sun protection is essential. The afternoon sees a slight drop, with the index falling to 9 at 3:00 PM, but remains elevated enough to warrant caution. As the day winds down, the UV Index dips back to a safer 1 by 7:00 PM, allowing for a more relaxed outdoor experience. Remember to protect yourself during those peak hours, especially between 10:00 AM and 2:00 PM, 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	5	moderate	30 min
10:00	8	very high	15 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	12	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 Potrero

The UV Index experiences significant seasonal changes, with high-risk months typically spanning from March to September. As the year progresses, the index escalates from a moderate 5 in January to a peak of 12 during the summer months of May through August, indicating extreme exposure levels with a burn time of only 10 minutes. Visitors and residents are strongly advised to take protective measures during these high-risk periods, including wearing sunscreen, protective clothing, and seeking shade to minimize the risk of skin damage. As summer fades, the index gradually decreases, with an increase to 15 minutes burn time in October, reinforcing the need for continued sun safety awareness throughout the fall.

Monthly Maximum UV Index for Potrero, United States

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

The table above highlights how UV exposure in Potrero 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.

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