POLLUTION LOCATOR|Smog and Particulates | County Report

Criteria Air Pollutant Report: MULTNOMAH County, OR
 
 
  • Map Locating the Pollution Sources

    MULTNOMAH 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:
    See how this county ranks on other criteria air pollution attributes tracked by Scorecard

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

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  • Environmental Justice Analysis for MULTNOMAH 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:95
    Percentage of days with moderate air quality:5
    Percentage of days with unhealthful air quality for sensitive populations:0
    Percentage of days with unhealthful air quality:0
    Maximum AQI level in 200375
    Median AQI level in 200323
    90th Percentile AQI level in 200342
    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 ppm5.9 ppm5.2 ppm 0 3
        8-hour average 9 ppm4 ppm4 ppm 0 3
    Lead
        Quarterly average 1.5 ug/m3.01 ug/m3.01 ug/m3 0 1
    Nitrogen dioxide
        Annual arithmetic mean 0.053 ppm.01 ppm0 ppm 0 1
    Ozone
        1-hour average 0.12 ppm.09 ppm.08 ppm 0 1
        8-hour average 0.08 ppm.06 ppm.06 ppm 0 1
    PM-25
        24-hour average 65 ug/m328 ug/m326 ug/m3 0 2
        Annual arithmetic mean 15 ug/m38.2 ug/m38.1 ug/m3 0 2
    PM-10
        24-hour average 150 ug/m333 ug/m332 ug/m3 0 3
        Annual arithmetic mean 50 ug/m318 ug/m313 ug/m3 0 3
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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 Sources157,06033,4423,0959,8882,53417,366
    Area Sources21,8421,9753,9009,5743,72517,514
    Point Sources2,0001,0557971,4244502,115
    All sources180,90336,4727,79220,8866,71036,994
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  • Links

    Scorecard's report on
    Oregon State Implementation Plan
    Oregon Department of Environmental Quality
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