The Air District is extending an air quality advisory for wildfire smoke through tomorrow, Sunday, September 11. Smoke from wildfires in California, Oregon and Washington are expected to continue to impact the Bay Area tomorrow. Isolated pockets of elevated air pollution levels are possible; however, pollution levels are not expected to exceed the national 24-hour standard. A Spare the Air Alert is not in effect and air quality is not expected to be unhealthy. Smoky, hazy skies may be visible and the smell of smoke may be present.