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.

As thousands of acres burn across Southern California, wildfire smoke is causing poor air quality in the region and beyond.

Already known for having some of the worst air quality in the U.S., people in Southern California are now also at risk of inhaling smoke.

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 series of huge, devastating fires ravaging Los Angeles County are blanketing virtually the entire region in toxic smoke. Interactive maps show that the particulate matter from the fires has rendered the air “unhealthy” in a wide area stretching from Pasadena to Downtown Los Angeles,

The extreme fire conditions caused by a "life-threatening" windstorm have been deemed a "particularly dangerous situation," weather officials say.