California Air Resources Board California Map with       
  District Boundaries
PM10 Air Quality Data Summaries (1988-1997)
San Luis Obispo County APCD
Year % of Samples
Above 24-Hr Standard
Exceeds Annual
Standard?
PM10 Concentration in ug/m3
State
>50ug/m3
Federal
>150ug/m3
State
AGM
Federal
AAM
Max
24-Hr
Max
AGM
Max
AAM
Max
EPDC
Max 99th
Percentile
1997 17 0 Y N 99.4   35.0   38.3   60.7   99.4   
1996 19 0 Y N 97.6   31.6   39.4   56.9   97.6   
1995 13 0 Y N 73       36.8   39.9   75.6   73       
1994 3 0 N N 78       20.8   22.4   70.8   78       
1993 29 0 Y N 141       36.8   42.8   77.8   141       
1992 14 0 Y N 135       37.2   43.1   73.8   135       
1991 21 0 Y Y 119       37.4   53.7   78.0   119       
1990 15 0 N N 86       26.0   30.3   61.6   86       
1989 16 0 Y N 84       30.8   32.0     84       
1988 5 0 Y N 63       30.9   22.5     63       

Go to Data Explanation Explanation of the terminology in the header above, as well as the sampling program and analytical methods used to collect the data, the PM10 air quality standards, and how to request air quality data.

Please send questions or comments to:

aqdweb@arb.ca.gov

This page last revised on March 1, 1999

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