•  
  • Select pollutant, month and day, then click on the year you want to retrieve data for
  •  
  • For data prior 2012, go to the ARB web site
  •  
  • To map ARB ozone or PM2.5 data ARB mapping


  •  

    PM 2.5
    Ozone
    NOx
    CO














    01 11 22 02 12 23 03 13 24 04 14 25 05 15 26 06 16 27 07 17 28 08 18 29 09 19 30 10 20 31 21