Washington

If you live in Snohomish County, the air you breathe may put your health at risk.

Ozone

Particle Pollution 24-hour

Particle Pollution Annual

You can make a difference in the air that you breathe.

Tell your friends about the air where you live.

High Ozone Days
Ozone Grade: DNC How is my grade calculated?
Weighted Average: DNC No monitor for this pollutant exists in this county. Learn More.
Particle Pollution - 24 Hour
Grade: F How is my grade calculated?
Weighted Average: 6.0 Change Since 2000:
4.7
6.0
fewer days this year
Particle Pollution - Annual
Grade: Pass How is my grade calculated?
Design Value 7.9 Change Since 2000:
11.8
7.9
µg/m3
Groups At Risk
Total Population: 722,400 Risks to the population
Pediatric Asthma: 12,253 Risks to people with Asthma
Adult Asthma: 53,481 Risks to people with Asthma
COPD: 22,112 Risks to people with COPD
Cardiovascular Disease: 174,777 Risks to people with Cardiovascular Disease
Diabetes: 47,955Risks to people with Diabetes
Children Under 18: 173,083 Risks to children and teens
Adults 65 & Over: 77,622 Risks to older adults
Poverty Estimate: 78,538Risks to people with low incomes

The air you breathe needs your support.

You can make a difference in the air that you breathe.

Tell your friends about the air where you live.

  • Ranked 80 for high ozone days out of 277 metropolitan areas
  • Ranked 17 for 24-hour particle pollution out of 277 metropolitan areas
  • Ranked 181 for annual particle pollution out of 277 metropolitan areas

Compare Your Air



High Ozone Days Learn More
Change Since

This County:

Snohomish, WA

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

What is my length? 8
  • Island, WA
  • King, WA
  • Kitsap, WA
  • Mason, WA
  • Pierce, WA
  • Skagit, WA
  • Thurston, WA

ABCDFDNCINC
Particle Pollution - 24 Hour Learn More
Change Since

This County:

Snohomish, WA

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

ABCDFDNCINC
Particle Pollution - Annual Learn More
Change Since

This County:

Snohomish, WA

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

  • Island, WA
  • King, WA
  • Kitsap, WA
  • Mason, WA
  • Pierce, WA
  • Skagit, WA
  • Thurston, WA
PASSFAILDNCINC
Groups At Risk
Total Population: Risks to the population
Pediatric Asthma: Risks to people with Asthma
Adult Asthma: Risks to people with Asthma
COPD: Risks to people with COPD
Cardiovascular Disease: Risks to people with Cardiovascular Disease
Diabetes: Risks to people with Diabetes
Children Under 18: Risks to children and teens
Adults 65 & Over: Risks to older adults
Poverty Estimate: Risks to people with low incomes

More about Methodology.