Fresno Bee Newsroom Blog

Record-setting summer for air quality, but it’s still worst in country

I’m still thinking about ozone and the summer of 2013. I think the good news in California is also the bad news.

The good? Both the San Joaquin Valley and the South Coast Air Basin are poised to set all-time records for the least number of bad days — 86 in the Valley and 90 in South Coast, so far.

The bad? South Coast’s lowest-ever number of eight-hour ozone exceedances is still the worst in the country this year. The Valley’s lowest-ever is second worst. And third place is not even close to South Coast or the Valley.

Antelope Valley is third with 64 exceedances. Coachella Valley is fourth with 48. Houston is fifth with 20.

I checked the number of exceedances for the one-hour ozone standard, too. The Valley has not breached the standard this year, which would be a first if it holds up through the end of the warm season.

South Coast, which includes Los Angeles, Riverside, San Bernardino and Orange counties, had four exceedances of the one-hour standard. Houston had one. I found no others.

Responses

Mary Ann says:

Will decreasing the speed limit when the air gets bad also decrease air pollution?

Mark Grossi says:

I’m not an expert, but I have been told that optimizing gas mileage also reduces NOx and VOCs in most vehicles. I think generally the less gasoline burned, the less pollution emitted.

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