POLLUTION LOCATOR|Smog and Particulates | County Report

Criteria Air Pollutant Report: DALLAS County, TX
  • Map Locating the Pollution Sources

    DALLAS 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 TEXAS by criteria air pollutant health risks, exposures, or emissions.
    Rank facilities in DALLAS County by criteria air pollutant emissions.
    Rank monitoring stations in DALLAS County by criteria air pollutant exposures.

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  • Environmental Justice Analysis for DALLAS 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 50,250,112
        1-hour average 9,136,384

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  • Exposures to Criteria Air Pollutants
  • Nonattainment Status:
    This county is in the Dallas-Fort Worth, TX 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:59
    Percentage of days with moderate air quality:38
    Percentage of days with unhealthful air quality for sensitive populations:3
    Percentage of days with unhealthful air quality:1
    Maximum AQI level in 2003203
    Median AQI level in 200346
    90th Percentile AQI level in 200379
    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 ppm3.7 ppm3 ppm 0 1
        8-hour average 9 ppm2.3 ppm2 ppm 0 1
        Quarterly average 1.5 ug/m3.06 ug/m3.04 ug/m3 0 4
    Nitrogen dioxide
        Annual arithmetic mean 0.053 ppm.01 ppm.01 ppm 0 3
        1-hour average 0.12 ppm.16 ppm.13 ppm 4 4
        8-hour average 0.08 ppm.13 ppm.11 ppm 22 4
        24-hour average 65 ug/m348 ug/m339 ug/m3 0 7
        Annual arithmetic mean 15 ug/m314.2 ug/m313.7 ug/m3 0 7
        24-hour average 150 ug/m371 ug/m367 ug/m3 0 5
        Annual arithmetic mean 50 ug/m332 ug/m329 ug/m3 0 5
    Sulfur dioxide
        3-hour average 0.50 ppm.01 ppm.009 ppm 0 1
        24-hour average 0.14 ppm.004 ppm.004 ppm 0 1
        Annual arithmetic mean 0.03 ppm.001 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 Sources491,11193,0769,91229,5688,02253,109
    Area Sources17,9935,9108,53435,69911224,354
    Point Sources3,17610,0081391961504,045
    All sources512,280108,99518,58465,4638,28481,508
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  • Links

    Scorecard's report on
    Dallas County Real-Time Air Monitoring
    Ozone Animation Dallas-Fort Worth Metropolitan Area
    Texas State Implementation Plan
    Texas Natural Resource Conservation Commission
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