AirNow is a collaborative effort of federal agencies that provides air quality data across the U.S. The site also has up-to-date information about the wildfires, resources, data, and interactive maps to help users learn more about particular areas and how they might be affected. There's also a free AirNow mobile app.

A map from AirNow suggests that the air quality around Los Angeles and Anaheim, California, is unhealthy as the Palisades fire continues to burn in Los Angeles County. The fire, determined to be the most destructive in Los Angeles city history,

A pair of massive wildfires menacing Los Angeles from the east and west were still burning unchecked early on Thursday, two days after they ignited, but firefighting crews made progress overnight in controlling a smaller blaze burning in the hills overlooking Hollywood Boulevard.