We rode along on a recent aerial spraying treatment in El Monte to get a sense of how officials are responding to the local outbreak in the San Gabriel Valley.

Our air quality can change to unhealthy levels throughout the year, even when the skies don't necessarily look bad.

Supreme Court rejects a series of emergency appeals from Republican-led states and the coal and electric power industries.

Phillips 66 on Wednesday announced that it would cease operations at its Los Angeles-area refinery in the fourth quarter of 2025. “With the long-term sustainability of our [refinery] uncertain and ...

The skies will be mostly cloudy. The high will be 70°. Moderate air quality (51-100) Primary pollutant PM2.5 22 μg/m³ Pressure is the weight of the air in the atmosphere. It is normalized to the ...

In May 2023, weeks after the California Air Resources Board approved an ambitious rule to limit rail pollution, the Pacific ...

Living in a sprawling and big city like Los Angeles, where air pollution is a constant concern, every effort to reduce waste ...

It’s not just burrowing owl advocates who are concerned about the the consequences of solar sprawl. It’s desert tortoise ...

A new five-year plan addresses Los Angeles County’s historic and contemporary policies that have exposed vulnerable ...

A 7 On Your Side Investigation revealed the daunting costs and challenges associated with plugging L.A. County's abandoned ...

Diesel trucks moving goods for online shoppers to and from warehouses in Southern California have been linked with air ...