California Air Resources Board
PM10 Air Quality Data Summaries (1993-1997)
San Bernardino-4th Street
South Coast AQMD
 
South Coast Air Basin San Bernardino County
Year Number of Complete Months % of Samples
Above 24-Hr Standard
Exceeds Annual
Standard?
PM10 Concentration in ug/m3
1st
Qtr
2nd
Qtr
3rd
Qtr
4th
Qtr
State
>50ug/m3
Federal
>150ug/m3
State
AGM
Federal
AAM
Max
24-Hr
AGM AAM EPDC 99th
Percentile
1997 3 3 3 3 46 0 Y Y 108    45.6 51.2 148.6  108       
1996 3 3 3 3 58 0 Y Y 136    45.9 52.2 162.3  136       
1995 3 3 3 3 52 0 Y Y 148    48.1 56.8 171.8  148       
1994 3 3 3 3 50 0 Y Y 147    45.7 53.6 160.0  147       
1993 2 3 3 3 62 0 Y Y 139    47.6 55.9 165.0  139       

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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