Oregon

If you live in Multnomah County, the air you breathe needs your support.

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: B How is my grade calculated?
Weighted Average: 0.7 Change Since 2003:
0.0
0.7
fewer days this year
Particle Pollution - 24 Hour
Grade: C How is my grade calculated?
Weighted Average: 1.0 Change Since 2000:
3.2
1.0
fewer days this year
Particle Pollution - Annual
Grade: Pass How is my grade calculated?
Design Value 7.4 Change Since 2000:
9.0
7.4
µg/m3
Groups At Risk
Total Population: 748,031 Risks to the population
Pediatric Asthma: 14,417 Risks to people with Asthma
Adult Asthma: 62,458 Risks to people with Asthma
COPD: 31,567 Risks to people with COPD
Cardiovascular Disease: 170,155 Risks to people with Cardiovascular Disease
Diabetes: 48,122Risks to people with Diabetes
Children Under 18: 152,353 Risks to children and teens
Adults 65 & Over: 79,874 Risks to older adults
Poverty Estimate: 142,279Risks 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 139 for high ozone days out of 277 metropolitan areas
  • Ranked 24 for 24-hour particle pollution out of 277 metropolitan areas
  • Ranked 187 for annual particle pollution out of 277 metropolitan areas

Compare Your Air



High Ozone Days Learn More
Change Since

This County:

Multnomah, OR

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

What is my length? 7
  • Clackamas, OR
  • Clark, WA
  • Columbia, OR
  • Skamania, WA
  • Washington, OR
  • Yamhill, OR

ABCDFDNCINC
Particle Pollution - 24 Hour Learn More
Change Since

This County:

Multnomah, OR

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:

Multnomah, OR

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

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.