A fire at the Lineage Logistics cold storage facility in Los Angeles began on June 17 and led to air quality advisories through June 22, with fine-particle pollution reaching unhealthy levels across multiple valleys. Governor Gavin Newsom issued a state of emergency declaration, and officials deployed 5.5 million N95 masks, air purifiers, bottled water, and relief centers while closing intersections and advising residents to remain indoors. All reported details originate from a single left-center source.