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PM10 Air Quality Data Summaries (1988-1997)
Merced 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
1996 8 0 N N 61       27.7   30.8     61       
1995 26 0 Y N 100       32.3   38.7   143.8   100       
1994 17 0 Y N 131       34.5   39.2   139.2   131       
1993 30 0 Y N 121       33.5   42.5   151.1   121       
1992 37 0 Y N 98       41.1   45.8   181.8   98       
1991 45 0 Y Y 145       42.7   52.4   187.8   145       
1990 39 2 Y Y 211       44.7   53.2   176.8   211       
1989 29 0 Y Y 148       45.0   52.0   152.1   148       
1988 51 0 Y Y 114       48.3   52.2     114       

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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