State of the Air 2011

What's the State of YOUR Air?



The State of the Air 2011 report grades counties based on the number of unhealthy air days recorded over a three-year period and ranks both the cleanest and most polluted areas in the country.

While the State of the Air 2011 report shows great progress, it also serves to remind us that California continues to struggle with air quality as 90% of its residents live in areas with unhealthy air. 

View the Press Release 

For media inquiries, contact:
Maria Bernabe, 213-384-5864 ext. 243,

English and Spanish language spokespeople are available for interviews.

State of the Air 2011
View the California Report
View the Executive Summary
View the Methodology

Check out these key findings
California Grade Summary 
Dirtiest Cities in California
Californians at Risk Due to Air Pollution 

Your health depends on clean air!
Check out 10 easy things you can do for clean air!

Fact Sheets
State of California  
Greater Bay Area
Central Coast and San Luis Obispo
Greater Los Angeles Area
Greater Sacramento Area 
Greater San Diego Area
San Joaquin Valley

Trend Charts
Annual Particle Pollution Trend Charts 
Daily Particle Pollution Trend Charts
Ozone Trend Charts 

The maps provide a visual representation of the State of the Air 2010 report and the State of the Air 2011 report grades for annual particle pollution, daily (short-term) particle pollution, and ozone pollution.

State of the Air Champions
Take a look at our dedicated supporters in the fight for clean air and healthy lungs.


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View the nationwide American Lung Association State of the Air 2011 report at

To view the State of the Air 2010 report, click here.