The Air District is extending a Spare the Air Alert for smog through Sunday, October 6. A Spare the Air Alert remains in effect today, Saturday, October 5. Air quality is forecast to be unhealthy today and tomorrow. Very high inland temperatures and weak offshore winds, along with motor vehicle exhaust, will continue to create elevated concentrations of ozone, or smog.

The Air District is calling a Spare the Air Alert for smog for Saturday, October 5. Air quality is forecast to be unhealthy tomorrow. Very high inland temperatures and weak offshore winds, along with motor vehicle exhaust, will create elevated concentrations of ozone, or smog.

The Air District is extending a Spare the Air Alert for smog through Thursday, October 3. A Spare the Air Alert remains in effect today, Wednesday, October 2. Air quality is forecast to be unhealthy today and tomorrow. Very high inland temperatures and weak offshore winds, along with motor vehicle exhaust, will continue to create elevated concentrations of ozone, or smog.

The Air District announced today that it has fined the Marathon Martinez Refinery, which is operated by Marathon subsidiary Tesoro Refining & Marketing Company LLC, $5 million for air quality violations. This is the second largest penalty ever assessed by the Air District.