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Transportation Health Impact Assessment Toolkit

Air Quality Data

For EPA National Ambient Air Quality Standards, see http://www.epa.gov/air/criteria.html

IndicatorNational DatabaseLocal Resource

Daily emissions for the project region for
Ozone (O3)
Sulfur dioxide (SO2)
Nitrogen dioxide (NO2)
Particulate matter (PM(2.5/10))
Carbon monoxide (CO)

EPA State and County Level Air Quality Data

  • Click on Air Quality Index, under Monitoring
Emission levels for CO, NO2, SO2, PM2.5/10, ozone

CDC’s Environmental Public Health Tracking Network: state- and county-level air quality data concerning

  • Annual average ambient concentrations of PM2.5
  • Days exceeding the EPA regulatory standard for PM2.5
  • Days exceeding the EPA regulatory standard for ozone

Contact the state department of natural resources or the regional air quality facility.


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