UV Index in Snohomish, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Snohomish, United States, where the unique Csb climate can lead to varying UV exposure throughout the day. With peak UV levels reaching up to 8 in the early afternoon, it’s vital to recognize how these levels can significantly affect your skin health and increase the risk of sunburn. Being aware of UV Index ratings empowers you to take proactive measures to protect your skin, ensuring you enjoy the beautiful outdoors safely. In Snohomish, where clouds can be deceiving, staying informed about UV exposure is essential for maintaining your well-being all year round.

Hourly UV Index in Snohomish

As the sun rises, the UV Index gradually climbs, showcasing its intensity throughout the day. At 07:00, it starts at a mild 1, but by 09:00, it picks up pace, reaching 3. The peak occurs at 12:00, hitting a solid 7. From 13:00 to 14:00, the index reaches its zenith at 8, warning us to take precautions under the midday sun. As the afternoon rolls on, the UV intensity drops steadily—dipping to 6 by 15:00, then falling further to 5 by 16:00. The evening brings more relief, with readings returning to 1 by 19:00. Be mindful of the sun’s powerful reach, especially during its 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	3	moderate	30 min
10:00	5	moderate	30 min
11:00	6	high	25 min
12:00	7	high	25 min
13:00	8	very high	15 min
14:00	7	high	25 min
15:00	6	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 Snohomish

Throughout the year, seasonal changes in UV Index reflect varying levels of sun exposure risks. The highest risk months occur from May to August, where the UV Index climbs to very high levels (8-9), reducing the safe burn time to just 15 minutes. Notably, April marks the transition to high exposure with a UV Index of 6, while February and March indicate a shift towards moderate levels (3-5). During the fall and winter months, from September to February, the UV levels drop significantly, creating lower risk periods. Residents and visitors should take preventive measures seriously during the high-risk months, such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sun hours to minimize skin damage.

Monthly Maximum UV Index for Snohomish, United States

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

The table above highlights how UV exposure in Snohomish 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.

Snohomish'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
Snohomish	2	3	5	6	8	9	9	8	7	5	2	2
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