California Air Resources Board
PM10 Air Quality Data Summaries (1993-1997)
Los Angeles-North Main Street
South Coast AQMD
 
South Coast Air Basin Los Angeles 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 25 0 Y N 102    39.2 42.4 139.0  102       
1996 3 3 3 3 18 0 Y N 138    36.6 41.0 146.5  138       
1995 3 3 3 3 24 0 Y N 141    36.4 43.2 141.0  141       
1994 3 3 3 3 34 0 Y N 122    41.1 45.3 122.0  122       
1993 3 3 3 3 43 0 Y N 104    42.8 47.4 139.4  104       

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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