POLLUTION LOCATOR|Smog and Particulates | County Report

Criteria Air Pollutant Report: ALAMEDA County, CA
  • Map Locating the Pollution Sources

    ALAMEDA County
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  • Air Quality Rankings: Health Risks, Exposure, and Emissions
    Cleanest/Best Counties in US Percentile Dirtiest/Worst Counties in US
    0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

    Carbon Monoxide emissions:
    Nitrogen Oxides emissions:
    PM-2.5 emissions:
    PM-10 emissions:
    Sulfur Dioxide emissions:
    Volatile Organic Compound emissions:
    Air Quality Index:
    Ozone 1-hour average concentration:
    Ozone 8-hour average concentration:
    PM-2.5 24-hour average concentration:
    PM-10 24-hour average concentration:
    Person-days in exceedance of national air quality standard for ozone (1-hour):
    Person-days in exceedance of national air quality standard for ozone (8-hour):
    See how this county ranks on other criteria air pollution attributes tracked by Scorecard

    Rank counties in CALIFORNIA by criteria air pollutant health risks, exposures, or emissions.
    Rank facilities in ALAMEDA County by criteria air pollutant emissions.
    Rank monitoring stations in ALAMEDA County by criteria air pollutant exposures.

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  • Environmental Justice Analysis for ALAMEDA County

    View Summary Environmental Justice Report (en español).

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  • Health Risks
  • Population Exposed to Unhealthy Levels of Criteria Air Pollutants:

    Pollutant Person-days
    in exceedance
    of NAAQS
        8-hour average 7,305,150
        1-hour average 1,461,030

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  • Exposures to Criteria Air Pollutants
  • Nonattainment Status:
    This county is in the San Francisco Bay Area, CA nonattainment area for failing to meet the national ambient air quality standard for the following criteria air pollutants:
    1. Ozone
    Air Quality Index:
    Percentage of days with good air quality:86
    Percentage of days with moderate air quality:13
    Percentage of days with unhealthful air quality for sensitive populations:2
    Percentage of days with unhealthful air quality:0
    Maximum AQI level in 2003124
    Median AQI level in 200334
    90th Percentile AQI level in 200362
    Air Quality Index
    0 - 50 Good
    50 - 100 Moderate
    100 - 200 Unhealthful
    200 - 300 Very Unhealthful
    300 - 500 Hazardous
    2003 Summary of Pollutant Concentrations:
    Pollutant NAAQS
    of NAAQS
    Carbon monoxide
        1-hour average 35 ppm6 ppm6 ppm 0 4
        8-hour average 9 ppm4.4 ppm4.3 ppm 0 4
        Quarterly average 1.5 ug/m3.01 ug/m30 ug/m3 0 1
    Nitrogen dioxide
        Annual arithmetic mean 0.053 ppm.01 ppm.01 ppm 0 3
        1-hour average 0.12 ppm.12 ppm.12 ppm 1 6
        8-hour average 0.08 ppm.09 ppm.09 ppm 5 6
        24-hour average 65 ug/m342 ug/m334 ug/m3 0 2
        Annual arithmetic mean 15 ug/m39 ug/m38.7 ug/m3 0 2
        24-hour average 150 ug/m337 ug/m332 ug/m3 0 2
        Annual arithmetic mean 50 ug/m319 ug/m318 ug/m3 0 2
    Sulfur dioxide
        3-hour average 0.50 ppm.01 ppm.01 ppm 0 1
        24-hour average 0.14 ppm.008 ppm.007 ppm 0 1
        Annual arithmetic mean 0.03 ppm.003 ppm0 ppm 0 1
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  • 1999 Emissions Summary of Criteria Air Pollutants
  • (Expressed in tons of pollutant emitted)
    PM-2.5 PM-10 Sulfur
    Mobile Sources281,31446,7145,04414,6243,86226,112
    Area Sources16,9051,5874,94717,15322310,617
    Point Sources5372,3475169973253,550
    All sources298,75650,64810,50732,7744,41040,279
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  • Links

    Scorecard's report on
    Alameda County Real-Time Air Monitoring
    California State Implementation Plan for Ozone
    California Air Resources Board
    California Air Quality Measurements (daily and hourly statistics)
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