POLLUTION LOCATOR|Smog and Particulates | County Report

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

    HUMBOLDT 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:
    PM-2.5 24-hour average concentration:
    PM-10 24-hour average concentration:
    See how this county ranks on other criteria air pollution attributes tracked by Scorecard

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

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  • Environmental Justice Analysis for HUMBOLDT County

    View Summary Environmental Justice Report (en español).

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  • Exposures to Criteria Air Pollutants
  • Air Quality Index:
    Percentage of days with good air quality:91
    Percentage of days with moderate air quality:9
    Percentage of days with unhealthful air quality for sensitive populations:0
    Percentage of days with unhealthful air quality:0
    Maximum AQI level in 200392
    Median AQI level in 200322
    90th Percentile AQI level in 200350
    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
    PM-25
        24-hour average 65 ug/m336 ug/m335 ug/m3 0 1
        Annual arithmetic mean 15 ug/m38.1 ug/m30 ug/m3 0 1
    PM-10
        24-hour average 150 ug/m368 ug/m362 ug/m3 0 1
        Annual arithmetic mean 50 ug/m321 ug/m30 ug/m3 0 1
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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 Sources59,5648,7253,43716,56536713,376
    Area Sources48,0822,2535,5957,8951146,373
    Point Sources1,7451,39232959780236
    All sources109,39112,3709,36125,05856119,985
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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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