The LA area is once again the worst for ozone in the U.S., a pollutant impacting millions more people nationwide, the ...

Los Angeles is the smoggiest U.S. city for the 25th time in 26 years, despite reducing unhealthy ozone days by 40% since 2000 ...

As fires burned in Los Angeles this year, newer toxin monitors found contaminants that aren’t measured by standard methods.

Monitoring systems are not all encompassing and do not always pick up all of the hundreds of harmful chemicals released, ...

and other environmental health hazards and shared them with the public through the local Air Quality Index. But the monitoring system misses hundreds of harmful chemicals released in urban fires, and ...

UCLA's annual survey reveals growing concerns over the high cost of living and deportation fears among LA County residents.

Residents across New York and New Jersey are dealing with poorer air quality than usual, but a new report revealed that even ...