Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels in multiple counties.

South Coast Air Quality Management District ... map illustrates which parts of Southern California were under a No-Burn Day alert this weekend. South Coast AQMD South Coast AQMD—the air ...

Researchers at the University of Southern California ... risk from air pollution in the Los Angeles basin, according to analysis by the South Coast Air Quality Management District.

According to the map, the 10 ZIP codes with highest exposure are concentrated near the ports and along the 110, 710, and 605 freeways, which are trucking routes to rail yards and warehouses. Areas ...

Wildfire ash carries many carcinogens that could cause short- and long-term health problems, including asthma attacks and ...