Health Indicator Report of Air Quality - Particulate Matter (PM2.5) Level
Long-term exposure to fine particulate matter (PM2.5) is related to a variety of adverse health conditions. Each 10 ug/m3 elevation in PM2.5 is related to an 8% increase in lung cancer mortality, a 6% increase in cardiopulmonary mortality, and a 4% increase in death from general causes. (1)
Map Not AvailableThe data are grouped by 2 or more dimensions. Maps can only be displayed when the data are grouped by a single geographical dimension. At some future point the site will provide a mechanism to choose or cycle through the different dimensions.
NotesIn the Data Table, double asterisks (**) designates missing data. The reason for the missing data will be indicated in the same row of the table. - "Insufficient Data" means monitors were not running for at least 75% of the time for that year. - "Data Not Available" means either there was no monitoring equipment in the area, or the monitoring equipment was not operating.
Data SourceU.S. Environmental Protection Agency, EPA Air Quality System Monitoring Data, State Air Monitoring Data. http://www.epa.gov/air/data/aqsdb.html
Data Interpretation IssuesThis measure provides a general indication of the overall trend in annual PM2.5 concentrations. It may be affected by density and placement of monitors, and coverage will vary across the country and within states. It does not directly reflect exposure. Certain geographic areas, such as those near busy roads, are likely to have higher values. It is important to understand that this indicator is not for use compliance determination with NAAQS or reasonable further progress toward attaining compliance. The relationship between ambient concentrations and personal exposure is largely unknown and varies depending upon pollutant, activity patterns, and microenvironments.
DefinitionAnnual average (based on seasonal averages and daily measurement) ambient concentrations (microgram per cubic meter, g/m3) of PM2.5
NumeratorDays in which a county exceeded the national standard for ambient air concentrations of PM2.5.
Page Content Updated On 01/11/2016, Published on 01/11/2016