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PM10 Air Quality Data Summaries (1988-1997)
Los Angeles 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 53 0 Y N 116       41.9   46.1   139.0   116       
1996 49 0 Y N 138       39.4   45.4   151.0   138       
1995 49 2 Y N 157       40.8   47.7   141.0   157       
1994 50 0 Y N 127       41.1   45.3   155.8   127       
1993 53 0 Y N 104       42.8   47.4   291.3   104       
1992 47 2 Y N 222       44.1   49.0   389.7   222       
1991 67 3 Y Y 780       59.7   65.9   157.6   780       
1990 66 4 Y Y 342       49.4   60.4   158.9   342       
1989 79 1 Y Y 172       59.6   63.8   176.4   172       
1988 83 0 Y Y 149       57.1   63.0     149       

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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