UV Index in Mount Vernon, United States

Last updated: May 3, 2025

In Mount Vernon, United States, being aware of the UV Index is essential for maintaining skin health and preventing sunburn. Understanding UV levels helps residents and visitors alike to take appropriate precautions, especially during the sun's peak hours. With a Dsb climate characterized by warm summers and significant sunlight exposure, Mount Vernon experiences considerable UV intensity—peaking at 10 around noon. As you navigate the sunny days, stay informed about the UV Index to protect your skin and enjoy the outdoors safely!

Hourly UV Index in Mount Vernon

The hourly UV Index data reveals a dynamic shift in sun intensity throughout the day, starting from a gentle 1 at 07:00, ideal for morning strolls. As the sun rises higher, the index escalates, peaking at a potent 10 between 12:00 and 13:00. This mid-day surge emphasizes the need for sunscreen and protective gear, as the risk of harm from UV rays increases significantly. By 15:00, the index begins to decline, settling at 7 before tapering off further to a mere 1 by 19:00, signaling a safe reprieve for evening outdoor activities. Stay aware and protect your skin 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	2	low	45 min
09:00	4	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	10	very high	15 min
14:00	9	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Mount Vernon

Throughout the year, seasonal changes in UV exposure are notable, with the highest UV Index values occurring from April to September. Specifically, April to June sees extreme levels, peaking in June (UV Index 11), which necessitates heightened caution. The high-risk months for sun exposure include April to September, where the burn time is significantly reduced (as low as 10 minutes in June). Visitors and residents are advised to take protective measures during these months, such as wearing broad-spectrum sunscreen, protective clothing, and seeking shade during peak sunlight hours to reduce the risk of skin damage. As a reference, in January and December, the UV levels drop considerably, making them safer months for outdoor activities with a burn time of up to 45 minutes.

Monthly Maximum UV Index for Mount Vernon, United States

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

The table above highlights how UV exposure in Mount Vernon 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.

Mount Vernon'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
Mount Vernon	3	5	6	9	10	11	10	10	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