POLLUTION LOCATOR|Smog and Particulates | County Report

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

    FRESNO 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 FRESNO County by criteria air pollutant emissions.
    Rank monitoring stations in FRESNO County by criteria air pollutant exposures.

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  • Environmental Justice Analysis for FRESNO 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
    Ozone
        8-hour average 240,641,975
        1-hour average 22,108,450
    PM-25
        Annual arithmetic mean 3,401,300


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  • Exposures to Criteria Air Pollutants
  • Nonattainment Status:
    This county is in the San Joaquin Valley, CA nonattainment area for failing to meet the national ambient air quality standard for the following criteria air pollutants:
    1. Ozone
    2. PM-10
    Air Quality Index:
    Percentage of days with good air quality:15
    Percentage of days with moderate air quality:45
    Percentage of days with unhealthful air quality for sensitive populations:36
    Percentage of days with unhealthful air quality:4
    Maximum AQI level in 2003179
    Median AQI level in 200390
    90th Percentile AQI level in 2003140
    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
    Standard
    Highest
    Recorded
    Concentration
    Second
    Highest
    Recorded
    Concentration
    Number
    of NAAQS
    Exceedances
    Stations
    Monitoring
    Pollutant
    Carbon monoxide
        1-hour average 35 ppm5 ppm5 ppm 0 6
        8-hour average 9 ppm4.1 ppm3.6 ppm 0 6
    Lead
        Quarterly average 1.5 ug/m3.01 ug/m30 ug/m3 0 1
    Nitrogen dioxide
        Annual arithmetic mean 0.053 ppm.02 ppm.01 ppm 0 7
    Ozone
        1-hour average 0.12 ppm.15 ppm.13 ppm 26 7
        8-hour average 0.08 ppm.11 ppm.11 ppm 283 7
    PM-25
        24-hour average 65 ug/m363 ug/m362 ug/m3 0 4
        Annual arithmetic mean 15 ug/m318.5 ug/m317.8 ug/m3 4 4
    PM-10
        24-hour average 150 ug/m3108 ug/m392 ug/m3 0 5
        Annual arithmetic mean 50 ug/m343 ug/m340 ug/m3 0 5
    Sulfur dioxide
        3-hour average 0.50 ppm.009 ppm.006 ppm 0 2
        24-hour average 0.14 ppm.004 ppm.004 ppm 0 2
        Annual arithmetic mean 0.03 ppm.002 ppm.001 ppm 0 2
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  • 1999 Emissions Summary of Criteria Air Pollutants
  • (Expressed in tons of pollutant emitted)
      Carbon
    monoxide
    Nitrogen
    oxides
    PM-2.5 PM-10 Sulfur
    dioxide
    Volatile
    organic
    compounds
    Mobile Sources137,59826,8775,70125,3601,09813,481
    Area Sources24,2076,8256,81922,2771,48612,117
    Point Sources1,0513,7452368831,166272
    All sources162,85637,44712,75648,5203,75025,870
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  • 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)
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