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

An annual report from the American Lung Assn. showed that Los Angeles has improved its air quality but still deserves its ...

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

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

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

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