California Air Resources Board
PM10 Air Quality Data Summaries (1993-1997)
Norco-Norconian
South Coast AQMD
 
South Coast Air Basin Riverside 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 42 2 Y N 158    44.2 49.7 172.4  158       
1996 3 3 3 3 33 0 Y N 94    39.7 43.8 171.3  94       
1995 3 3 3 3 47 4 Y Y 177    44.6 54.9 191.6  177       
1994 3 3 3 3 58 0 Y Y 139    45.3 52.9   139       
1993 3 3 3 3 51 2 Y Y 164    43.9 53.1   164       

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 Sites within the Basin   |  Other Sites within the District  |   Other Sites within the County
District/Site Directory  |  County/Site Directory  |  Monitoring Site Directory 
PM10 Home Page   |  Other Pollutants
ARB Home Page  |  Search ARB Programs/Topics  |   Email ARB Help Attendant