The state can mandate trucks registered in California regularly be required to have their pollution controls inspected and repaired.

Ophelia Young breaks down the forecast for haze on Thursday.

On Wednesday at 11:07 a.m. an air quality alert was reported by the NWS San Diego CA in effect until Friday at midnight. The ...

As high pressure remains overhead, the air quality is impacted.

"You can smell it too," said Rosalva Amezcua in Spanish. "It's been bad for more than a year, but we have to go to work and ...

Poor air quality has led to advisories recommending residents stay indoors in some areas of California. Official measurements ...

The Sacramento region's air quality reached "unhealthy for sensitive groups" level on Thursday morning, according to IQAir.

California’s top environmental regulator lauded a trade deal that Canada struck to import electric cars from China as a win in the global effort to replace gas vehicles.

The Bay Area Air District issued a Spare the Air alert. The stagnant air was expected to stick around amid a windless stretch ...

Using high-resolution satellite data, the team reported the first statistically significant drop in nitrogen dioxide ...

After a decade of proven success in reducing the risk of ship strikes and improving coastal air quality, the Protecting Blue Whales and Blue Skies (BWBS) ...