California

Comment Share This
High Ozone Days
Ozone Grade: F How is my grade calculated?
Weighted Average: 4.3 Change Since 1996:
10.8
4.3
fewer days this year
Particle Pollution - 24 Hour
Grade: F How is my grade calculated?
Weighted Average: 4.0 Change Since 2000:
9
4.0
fewer days this year
Particle Pollution - Annual
Grade: Pass How is my grade calculated?
Design Value 8.7 Change Since 2000:
11.3
8.7
µg/m3
Groups At Risk
Total Population: 1,041,274 Risks to the population
Pediatric Asthma: 17,186 Risks to people with Asthma
Adult Asthma: 61,367 Risks to people with Asthma
Chronic Bronchitis: 34,463 Risks to people with Chronic Bronchitis
Emphysema: 17,043 Risks to people with Emphysema
Cardiovascular Disease: 289,409 Risks to people with Cardiovascular Disease
Diabetes: 77,083Risks to people with Diabetes
Children Under 18: 259,082 Risks to children and teens
Adults 65 & Over: 126,828 Risks to older adults
Poverty Estimate: 97,510Risks to people with low incomes
  • Ranked 93 for high ozone days out of 277 metropolitan areas
  • Ranked 24 for 24-hour particle pollution out of 277 metropolitan areas
  • Ranked 123 for annual particle pollution out of 277 metropolitan areas

Compare Your Air



High Ozone Days Learn More
Change Since

This County:

Contra Costa, CA

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

ABCDFDNCINC
Particle Pollution - 24 Hour Learn More
Change Since

This County:

Contra Costa, CA

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

Failed to parse expression null:javax.servlet.jsp.el.ELException: Encountered "=", expected one of ["}", ".", ">", "gt", "<", "lt", "==", "eq", "<=", "le", ">=", "ge", "!=", "ne", "[", "+", "-", "*", "/", "div", "%", "mod", "and", "&&", "or", "||", ":", "(", "?"]
ABCDFDNCINC
Particle Pollution - Annual Learn More
Change Since

This County:

Contra Costa, CA

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
Chronic Bronchitis: Risks to people with Chronic Bronchitis
Emphysema: Risks to people with Emphysema
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

Notes:

(1) INC indicates incomplete monitoring data for all three years. Therefore, those counties are excluded from the grade analysis.
(2) DNC indicates that there is no monitor collecting data in the county.

More about Methodology.

Content

SOTA 2011 Survey