Public schools across the Bay Area will be closed Friday due to smoke hazard
Public schools across the Bay Area will be closed Friday due to smoke hazard SFGateNo Relief From 'Very Unhealthy' Air in San Francisco After Camp Fire—and It's Getting Worse Fortune'Very unhealthy' Bay Area air forces schools to close, cable car shutdown San Francisco ChronicleCalifornia's deadliest wildfire is also a massive air-quality problem Washington PostFull coverage