UV Index in Sedro-Woolley, United States

Last updated: June 2, 2025

In Sedro-Woolley, United States, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With the region's mild Csb climate, UV levels can vary significantly throughout the day, reaching a peak of 9 around noon. By being aware of these levels, residents and visitors can take proactive steps to protect themselves from overexposure, especially during the sunniest hours. Staying informed about UV risks not only helps ensure a more enjoyable outdoor experience but also safeguards skin health for the long term.

Hourly UV Index in Sedro-Woolley

The UV Index data reveals a dynamic daily pattern of sun exposure. Starting gently at 1 at 7:00 AM, it gradually climbs, reaching 3 by 9:00 AM. The intensity peaks at 9 around 1:00 PM, signaling the highest risk for UV-related harm. As the afternoon progresses, the index dips, falling back to 5 by 4:00 PM, and dropping to 1 again by 7:00 PM. With such fluctuations, it’s essential to protect your skin during the peak hours of 11:00 AM to 2:00 PM when the UV Index hits 7 and above. Always remember, even on mild days, sunscreen and protective clothing are your best allies!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:003moderate30 min
10:005moderate30 min
11:007high25 min
12:008very high15 min
13:009very high15 min
14:008very high15 min
15:007high25 min
16:005moderate30 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Sedro-Woolley

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 Sedro-Woolley, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Sedro-Woolley. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235689987422
Data source: Statistical UV Index data for Sedro-Woolley, 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 Sedro-Woolley UV Index with Other United States Cities

The table above highlights how UV exposure in Sedro-Woolley 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.
Sedro-Woolley's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Sedro-Woolley235689987522
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Houston UVI589111112121110975