California Air Resources Board  California map
Statewide Ozone Data Summary (1980-1998)
Year Number of Days Standard Exceeded Maximum Concentration
in ppm
State
1-hour
Federal
1-hour
Federal
8-hour
1-hour 8-hour
1998 134 74 120 0.24 0.206
1997 185 72 157 0.21 0.148
1996 177 101 151 0.24 0.173
1995 205 123 177 0.26 0.203
1994 199 126 180 0.30 0.208
1993 210 137 180 0.28 0.195
1992 208 154 190 0.30 0.218
1991 203 145 182 0.32 0.203
1990 213 138 181 0.33 0.198
1989 228 175 208 0.34 0.252
1988 237 185 209 0.35 0.258
1987 221 174 205 0.33 0.210
1986 239 182 209 0.35 0.251
1985 225 163 197 0.39 0.288
1984 227 181 200 0.34 0.248
1983 209 159 183 0.39 0.258
1982 217 156 186 0.40 0.265
1981 261 204 223 0.39 0.295
1980 243 181 198 0.49 0.336
 
Statewide Ozone Summary Graphs

Please send questions or comments to:

aqdweb@arb.ca.gov

This page last revised on March 31, 1999

Other Pollutants  |  Ozone Home Page  |  Air Basin (Site) Selection Map 
ARB Home Page  |  Search ARB Programs/Topics  |  Email ARB Help Attendant