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Mobile Monitoring (aka Sniffer Study)

These PM2.5 concentration maps are made from data collected by the FNSB instrumented “sniffer vehicle” traveling on public roads. These maps are instantaneous snapshots of what was happening at a particular location at one point in time, (not a 24-hour average, and not a 1 hour average). The contouring is projected using a “natural neighbor” program, and is only a representation of different concentrations compared from one area to another. All data and results are preliminary.

The contours (colors) correspond to the EPA PM2.5 24-hour levels from the Air Quality Index chart. If the 2 second measured concentrations remained for 24 hours, this would be the health risk category.