Despite its reputation as a leader in environmental protection, California is home to many of the most polluted cities in the United States, according to a recent report by the American Lung Association.

The “State of the Air” report, which analyzes data from 2019 to 2021, found that six of the top ten most ozone-polluted cities in the country are located in California. Los Angeles topped the list, followed by Visalia, Bakersfield, Fresno, Sacramento, and San Diego.

When it comes to year-round particle pollution, California cities also dominated the rankings, with Bakersfield, Fresno, Visalia, and Los Angeles taking the top four spots.

The report highlights the ongoing challenges faced by California in addressing air pollution, despite the state’s aggressive environmental policies and eco-friendly reputation.

Experts point to several factors contributing to California’s pollution problems, including its large population, heavy traffic, and unique geography. The state’s valleys and mountains can trap pollutants, leading to high concentrations of harmful particles and ozone.

Environmental advocates argue that while California has made progress in reducing emissions from vehicles and industries, more needs to be done to protect public health, particularly in disadvantaged communities that are disproportionately affected by air pollution.

The findings underscore the need for continued efforts to improve air quality, not only in California but across the United States. The American Lung Association calls for stronger federal and state policies to reduce emissions from transportation, power plants, and other sources of pollution.

As California grapples with the consequences of poor air quality, the report serves as a reminder that even the most environmentally conscious states face significant challenges in protecting the health of their residents and the planet.