POLLUTION LOCATOR|Smog and Particulates | County Report

Criteria Air Pollutant Report: HAMPDEN County, MA
  • Map Locating the Pollution Sources

    HAMPDEN 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 (8-hour):
    See how this county ranks on other criteria air pollution attributes tracked by Scorecard

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    Rank facilities in HAMPDEN County by criteria air pollutant emissions.
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  • Environmental Justice Analysis for HAMPDEN 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 1,383,570

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  • Exposures to Criteria Air Pollutants
  • Nonattainment Status:
    This county is in the Springfield (Western MA), MA 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:68
    Percentage of days with moderate air quality:29
    Percentage of days with unhealthful air quality for sensitive populations:3
    Percentage of days with unhealthful air quality:0
    Maximum AQI level in 2003137
    Median AQI level in 200341
    90th Percentile AQI level in 200372
    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 ppm4 ppm3.9 ppm 0 2
        8-hour average 9 ppm3.1 ppm3 ppm 0 2
    Nitrogen dioxide
        Annual arithmetic mean 0.053 ppm.02 ppm.01 ppm 0 2
        1-hour average 0.12 ppm.11 ppm.1 ppm 0 1
        8-hour average 0.08 ppm.09 ppm.09 ppm 3 1
        24-hour average 65 ug/m351 ug/m350 ug/m3 0 5
        Annual arithmetic mean 15 ug/m312.9 ug/m312.5 ug/m3 0 5
        24-hour average 150 ug/m357 ug/m355 ug/m3 0 1
        Annual arithmetic mean 50 ug/m321 ug/m30 ug/m3 0 1
    Sulfur dioxide
        3-hour average 0.50 ppm.04 ppm.04 ppm 0 1
        24-hour average 0.14 ppm.02 ppm.02 ppm 0 1
        Annual arithmetic mean 0.03 ppm.006 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 Sources91,43116,1742,46110,4451,1578,885
    Area Sources6,6021,9489492,0983,9636,262
    Point Sources1,5984,2972985749,1191,185
    All sources99,63122,4193,70813,11814,23816,332
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  • Links

    Scorecard's report on
    Massachusetts Air Quality Regulations
    Massachusetts Department of Environmental Protection
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