POLLUTION LOCATOR|Smog and Particulates | County Report

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

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

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  • Environmental Justice Analysis for HARRIS 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 586,162,018
        1-hour average 298,475,138


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  • Exposures to Criteria Air Pollutants
  • Nonattainment Status:
    This county is in the Houston-Galveston-Brazoria, 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:48
    Percentage of days with moderate air quality:41
    Percentage of days with unhealthful air quality for sensitive populations:7
    Percentage of days with unhealthful air quality:4
    Maximum AQI level in 2003213
    Median AQI level in 200351
    90th Percentile AQI level in 2003109
    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 ppm6.1 ppm6 ppm 0 5
        8-hour average 9 ppm4.9 ppm4.2 ppm 0 5
    Lead
        Quarterly average 1.5 ug/m3.01 ug/m3.01 ug/m3 0 1
    Nitrogen dioxide
        Annual arithmetic mean 0.053 ppm.01 ppm.01 ppm 0 12
    Ozone
        1-hour average 0.12 ppm.22 ppm.19 ppm 83 17
        8-hour average 0.08 ppm.13 ppm.12 ppm 163 17
    PM-25
        24-hour average 65 ug/m344 ug/m334 ug/m3 0 10
        Annual arithmetic mean 15 ug/m314.7 ug/m314.6 ug/m3 0 10
    PM-10
        24-hour average 150 ug/m3140 ug/m3104 ug/m3 0 9
        Annual arithmetic mean 50 ug/m339 ug/m329 ug/m3 0 9
    Sulfur dioxide
        3-hour average 0.50 ppm.1 ppm.07 ppm 0 6
        24-hour average 0.14 ppm.03 ppm.03 ppm 0 6
        Annual arithmetic mean 0.03 ppm.006 ppm.004 ppm 0 6
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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 Sources762,390191,54522,31789,06023,10880,787
    Area Sources52,2065,62015,64257,51510446,486
    Point Sources41,68990,6394,3455,85738,11954,854
    All sources856,285287,80342,303152,43261,331182,126
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  • Links

    Scorecard's report on
    Texas Real-Time Air Monitoring
    Texas State Implementation Plan
    Texas Natural Resource Conservation Commission
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