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  County Boundaries
PM10 Air Quality Data Summaries (1988-1997)
Riverside 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 72 7 Y Y 227       56.3   65.6   208.5   227       
1996 75 4 Y Y 215       52.0   62.8   212.8   215       
1995 64 8 Y Y 219       51.8   68.8   240.0   219       
1994 69 1 Y Y 161       56.0   65.5   186.9   161       
1993 66 4 Y Y 231       58.0   72.5   201.2   231       
1992 65 3 Y Y 242       49.3   62.6   323.0   242       
1991 80 8 Y Y 340       65.5   76.0   587.0   340       
1990 82 11 Y Y 520       66.9   80.3   553.3   520       
1989 88 15 Y Y 712       81.3   93.0   369.4   712       
1988 84 7 Y Y 252       81.8   94.5     252       

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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