POLLUTION LOCATOR|Smog and Particulates | County Report

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

    VENTURA County
  •   [ top ]
  • 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):
    Person-days in exceedance of national air quality standard for PM-10 (24-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 VENTURA County by criteria air pollutant emissions.
    Rank monitoring stations in VENTURA County by criteria air pollutant exposures.

  •   [ top ]
  • Environmental Justice Analysis for VENTURA County

    View Summary Environmental Justice Report (en español).

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

    Pollutant Person-days
    in exceedance
    of NAAQS
        8-hour average 48,258,930
        1-hour average 1,582,260
        24-hour average 791,130

      [ top ]
  • Exposures to Criteria Air Pollutants
  • Nonattainment Status:
    This county is in the Ventura Co, 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:50
    Percentage of days with moderate air quality:38
    Percentage of days with unhealthful air quality for sensitive populations:10
    Percentage of days with unhealthful air quality:2
    Maximum AQI level in 2003180
    Median AQI level in 200350
    90th Percentile AQI level in 2003103
    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 ppm7.2 ppm5 ppm 0 2
        8-hour average 9 ppm3.7 ppm3.5 ppm 0 2
    Nitrogen dioxide
        Annual arithmetic mean 0.053 ppm.01 ppm.01 ppm 0 5
        1-hour average 0.12 ppm.13 ppm.12 ppm 2 6
        8-hour average 0.08 ppm.11 ppm.1 ppm 61 6
        24-hour average 65 ug/m3116 ug/m382 ug/m3 0 5
        Annual arithmetic mean 15 ug/m314.2 ug/m312 ug/m3 0 5
        24-hour average 150 ug/m3168 ug/m3149 ug/m3 1 6
        Annual arithmetic mean 50 ug/m331 ug/m331 ug/m3 0 6
    Sulfur dioxide
        3-hour average 0.50 ppm.005 ppm.003 ppm 0 1
        24-hour average 0.14 ppm.002 ppm.002 ppm 0 1
        Annual arithmetic mean 0.03 ppm.001 ppm0 ppm 0 1
      [ top ]
  • 1999 Emissions Summary of Criteria Air Pollutants
  • (Expressed in tons of pollutant emitted)
    PM-2.5 PM-10 Sulfur
    Mobile Sources136,90061,1634,65417,0688,21013,290
    Area Sources10,6191,5262,2566,6924125,028
    Point Sources3,0981,0881732651381,563
    All sources150,61763,7787,08324,0268,76019,881
      [ top ]
    Email EPA
    Email Governor of CALIFORNIA
    Join an online discussion about pollution in VENTURA County

    Email a Scorecard Community Report to a friend
    Network with environmental groups
    Learn how to use Scorecard to find out about toxics in your community

    Contribute to Environmental Defense
    Volunteer with environmental groups in your community

      [ top ]
  • Links

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