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PM10 Air Quality Data Summaries (1988-1997)
Santa Clara County
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 5 0 N N 95       23.7   25.8   80.9   95       
1996 3 0 N N 76.1   22.1   24.9   95.0   76.1   
1995 6 0 N N 59.7   25.6   28.4   103.9   59.7   
1994 12 0 N N 92.6   26.6   32.5   132.0   92.6   
1993 13 0 Y N 101       32.7   28.4   140.8   101       
1992 24 0 N N 112       29.5   33.7   162.8   112       
1991 19 0 Y N 153       31.5   38.3   169.4   128       
1990 16 1 Y N 173       33.0   40.4   172.1   173       
1989 24 0 Y N 150       35.6   40.6   164.8   147       
1988 18 0 Y N 146       34.6   39.6     134       

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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