California Air Resources Board California Map with County Boundaries
Ozone Data Summaries (1980-1998)
Monterey County
Year Number of Days Standard Exceeded Ozone Concentrations in ppm
1 hour 8 hour
State
1hr
Federal
1hr
Federal
8hr
Max
1hr
3 Year
4th High*
EPDC*
Max
8hr
3 Year Avg
4th High*
1998 0 0 0 0.09 0.09 0.093 0.076 0.066
1997 0 0 0 0.09 0.09 0.090 0.076 0.066
1996 0 0 0 0.09 0.09 0.093 0.081 0.067
1995 0 0 0 0.09 0.09 0.094 0.077 0.069
1994 0 0 1 0.09 0.09 0.092 0.092 0.070
1993 2 0 0 0.11 0.09 0.092 0.083 0.069
1992 0 0 1 0.09 0.09 0.087 0.085 0.071
1991 1 0 0 0.10 0.10 0.095 0.078 0.073
1990 0 0 0 0.09 0.09 0.095 0.080 0.075
1989 3 1 1 0.13 0.09 0.098 0.095 0.072
1988 0 0 0 0.09 0.09 0.092 0.077 0.068
1987 0 0 0 0.09 0.09 0.095 0.077 0.071
1986 0 0 0 0.08 0.09 0.095 0.076 0.071
1985 1 0 1 0.11 0.09 0.098 0.087 0.074
1984 0 0 0 0.09 0.09 0.075 0.075 0.065
1983 1 0 0 0.10 0.09 0.084 0.083 0.061
1982 1 0 0 0.11 0.10 0.084 0.073 0.062
1981 0 0 0 0.09 0.10 0.087 0.070 0.065
1980 4 1 3 0.14 0.10   0.108 0.067
* The 3 year 4th high, 3 year average 4th high, and Expected Peak Day Concentration (EPDC) are calculated based on data for 3 successive years, listed by the last year of the three year period.  The EPDC represents the ozone concentration expected to occur once per year.
   

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This page last revised on March 26, 1999

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