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How good or bad is your air? These Southern California air quality maps will tell you

By in Press Enterprise on July 24, 2017

By Kurt Snibbe

Air quality in Southern California has improved a lot since 2000, but the fight against smog continues. This week the ports in Los Angeles and Long Beach announced their ambitious Clean Air Action Plan to cut down pollution from diesel engines. The financing of the estimated $14 billion proposal is undetermined.

You can find the air quality in your city on a daily basis here.

Excessive ozone

Days exceeding 8-hour federal standards.

Particle pollution

Atmospheric particulate matter with a diameter less than 2.5 micrometers.

Particulate mapCounty smog scorecard

Figures from the American Lung Association

county by countyRegional improvement

Air quality standards have changed in the region in the past 40 years. The methods of measuring have gotten better and the standards for cleaner air have gotten higher. Improvements are being made on both fronts. The chart below shows the number of days areas in the region exceeded current and former ozone standards since 1976.

days above excess by year

State snapshot

Satellite data representing average concentrations of particle matter (PM2.5) from 2001 to 2010. Compiled by Yale University, Environmental Performance Index. Southern California and the Central Valley are the biggest areas of concern.

Levels of health concern

California harmful ozone

Sources: AQMD, Lung.org, Yale University, South Coast AQMD, Environmental Protection Agency

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