Air Quality Data (AQ) collected by the California Air Resources Board (ARB). The ARB measures Air Pollutants at >180 locations across California.
partMOM: California AQ App
Source: California Environmental Protection Agency
Download: We’re working to integrate our datasets into Google Fusion Tables and/or Pachube. If you’d like to help please contact us.
Wiki: datafile: california_air_quality
Commentary: Notable air pollutants measure by the ARB include:
Black Carbon, Carbon Dioxide, Carbon Monoxide, COH, Hydrogen Sulfide, Light Scattering, Methane, Nitrogen Dioxide, Nitric Oxide, NOx, NOy, Non Methane Hydrocarbons, Ozone, Total Hydrocarbons.
Of particular interest:
ARB also measures Particulate matter with aerodynamic diameters less than or equal to 10 microns and 2.5 microns, PM10 and PM2.5 respectively. Off the top of my head, I don’t recall the diameters of the particulate emanating from FNPP – but this is something to look into.
Sulfur Dioxide and PM10 – sulfate is also measured. According to the paper by Priyadarshi A., et al.  both of these compounds provide evidence of neutron leakage from FNPP. I haven’t scoured the data but its there for anyone who’s interested.
We are looking for more Air Quality Measures from around the country! (and the world for that part).