Indicator Profile of Fine Particulate Matter (PM2.5) in Outdoor Air
Why Is This Important?Particulate matter (PM) is a mixture of solid particles such as dust, ash, smoke and droplets in the air. PM can be emitted directly from a source (e.g., smoke stacks, tail pipes or construction sites) or can form in the atmosphere from chemicals emitted by power plants, industries and cars.
Fine particles -- 2.5 microns in diameter or less (PM2.5) -- are of greatest health concern since they can be breathed deep into the respiratory tract. Exposure to these particles can lead to asthma attacks, coughing, shortness of breath, bronchitis, lung cancer, and premature death.
Fine Particulate Matter in Outdoor Air, Percent of Days Exceeding PM2.5 Standard, 2001 Through 2010
Data NotesNo modeled air quality data are available beyond 2006. Exceedances for counties with 2007-2010 data are based upon monitored results.
Data SourcesBureau of Air Monitoring, New Jersey Department of Environmental Protection;
Other Graphical Views
DefinitionPercent of days (and number of person-days) in which the average concentration of fine particulate matter exceeds the regulatory standard at a monitoring point. Fine particulate matter is defined as particles that are 2.5 microns in diameter or less (PM2.5).
How We Calculated the Rates
Page Content Updated On 09/14/12, Published on 09/26/12