ARB Logo California Map with      
  County Boundaries
PM10 Air Quality Data Summaries (1988-1997)
Orange 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 17 0 Y N 91       36.3   38.8   145.7   91       
1996 10 0 Y N 101       31.8   35.2   160.4   101       
1995 23 2 Y N 172       35.9   43.5   153.6   172       
1994 19 0 Y N 106       34.2   37.5   107.5   106       
1993 21 0 Y N 115       50.0   38.3   128.7   115       
1992 22 0 Y N 88       36.7   40.0   142.9   88       
1991 24 0 Y N 146       40.0   45.9   96.8   146       
1990 38 1 Y N 158       41.4   48.1   101.3   158       
1989 48 0 Y N 138       42.0   46.9   159.6   138       
1988 27 0 Y N 132       40.2   46.0     132       

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

Other Pollutants  |  PM10 Home Page  |  Air Basin (Site) Selection Map  |  Map for this Basin  
District/Site Directory  |  County/Site Directory  |  Monitoring Site Directory 
ARB Home Page  |  Search ARB Programs/Topics  |   Email ARB Help Attendant