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Data on this page extracted on April 19, 2024 at 01:08:24

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AQMIS2
     
Note: This AQMIS Ozone page reflects the 2008 National 8-Hour Ozone Standard of 0.075 ppm
San Francisco Bay Area Air Basin
Annual  Ozone Summary Data
2010  
Parts Per Million ( ppm )
Basin County Monitoring Site Exceedance Days Maximum Concentration Ozone
National 8-hr Std Parts Per Million ( ppm ) Season
0.075 ppm 0.070 ppm 1-hr 8-hr Covered
SFB  Alameda  Berkeley-6th Street  0  0  0.075   0.049   94 
SFB  Alameda  Fremont-Chapel Way  1  1  0.120   0.081   99 
SFB  Alameda  Livermore-793 Rincon Avenue  3  5  0.150   0.097   100 
SFB  Alameda  Oakland-9925 International Blvd  0  0  0.097   0.058   99 
SFB  Alameda  Oakland-West  0  0  0.040   0.035   0 
SFB  Contra Costa  Bethel Island Road  4  7  0.106   0.086   100 
SFB  Contra Costa  Concord-2956-A Treat Blvd  1  4  0.103   0.087   99 
SFB  Contra Costa  San Pablo-Rumrill Blvd  1  1  0.097   0.081   39 
SFB  Marin  San Rafael  0  0  0.083   0.069   99 
SFB  Napa  Napa-Jefferson Avenue  2  2  0.106   0.089   97 
SFB  San Francisco  San Francisco-Arkansas Street  0  0  0.079   0.051   100 
SFB  San Mateo  Redwood City  1  1  0.113   0.077   99 
SFB  Santa Clara  Cupertino-22601 Voss Ave  1  3  0.127   0.091   33 
SFB  Santa Clara  Gilroy-9th Street  5  7  0.094   0.081   100 
SFB  Santa Clara  Los Gatos  2  3  0.109   0.087   100 
SFB  Santa Clara  San Jose-Jackson Street  3  3  0.126   0.086   95 
SFB  Santa Clara  San Martin-Murphy Avenue  5  8  0.109   0.087   100 
SFB  Solano  Fairfield-Chadbourne Road  2  3  0.103   0.081   99 
SFB  Solano  Vallejo-304 Tuolumne Street  1  2  0.091   0.080   99 
SFB  Sonoma  Santa Rosa-5th Street†  0  0  0.084   0.068   98 
Standards:
State 1-hr: 0.090 ppm
State 8-hr: 0.070 ppm
National 1-hr: 0.12 ppm
2008 National 8-hr: 0.075 ppm
2015 National 8-hr: 0.070 ppm
Other Standards (pdf)
Get Additional Information on Sites
 

  Dagger † Indicates closed site.  
  Nat'l stds truncate 4 digit 8-Hr avgs to 3 decimals; State stds round to 3 decimals.  
  Cell color is red if national 8-hour standard level is exceeded.  
  Click on site name to see multiyear data for the site.  
  Season Covered (%) is based only on official data.  
  The 8-hour maximum value is based on the 2015 (0.070) ppm Nat'l std method.  
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