About California Clean Air Day

For a brief period in March 2020, California achieved some of the cleanest air in the Country. After the Independence Day holiday, we had some of the worst. Smoke from wildfires, now year-round, means that air pollution can occur even in the most pristine locations. Collectively we have the power to change the world and can choose to do so in ways that help, not harm, all Californians. Join us in challenging yourself to create clean air in your community

When it comes to air pollution, we can all do our part. Whether you’re an individual, business, government agency or nonprofit organization, there are things we all can do to improve air quality and protect public health. In a state with some of the worst air pollution in the United States, it is imperative that we do.

California Clean Air Day is built on the idea that shared experiences unite people to action to improve our community health. By joining together for a unified day of action we can create new habits to clear the air for all members of California’s diverse communities.

California Clean Air Day is a project of the Coalition for Clean Air.

About the Clean Air Pledge

The Clean Air Pledge allows individuals and organizations to commit to do our part to clear the air, through actions big and small. When you take the Clean Air Day Pledge, you will see two options: to register as an individual and/or household or to register on behalf of an organization.

Individual Pledge

Be a part of a community of pledgers that included more than 650,000 Californians in 2019. Take the pledge to choose from a menu of items that make a big difference. Choose from each of our three main categories (Switching Things Out, Planting Something, and Reducing Vehicle) to triple your impact! You can plant a tree, for example, or try out public transit or biking for the day.

Organization Pledge

Are you a business, school, governmental entity, non-profit organization or healthcare provider? Then sign up to take the organization pledge. There you will find a series of questions related to your type of organization, with the number of employees participating being a key component, as well as what business practices and educational efforts might be modified on or for Clean Air Day.

This year we have also provided an option for organizations to be assigned a code that their employees can use when making their individual Clean Air Pledge, allowing you to get a report of the number of employees who participated for your own engagement purposes. Participating organizations will be listed on our website.

Get Involved

In addition to making your Clean Air Pledge, there are a number of ways you can get involved in California Clean Air Day. As a business, you can provide support as a sponsor and plan to have your employees volunteer at one of the Clean Air Day events around the state. Local organizations can promote Clean Air Day and help their community have higher participation, and you can even plan your own California Clean Air Day event. We invite every California city and jurisdiction to pass a resolution declaring clean air day, and if yours hasn’t, let them know how easy it is to do. There are many ways to get involved, let us know your idea and what you’re planning to do.

7 of 10
most ozone-polluted U.S. cities are in California.
1 Million
annual school absences by California students related to air pollution
Californians are 4X more likely to experience serious air pollution-related problems

Our 2019 reach

650,000 participants
up 650% from 100,000 in 2018

950,000 social media impressions
up 19% from 800,000 in 2018

51 mayors representing 8.2 million people
signed on to the Mayors Council

8.74 million drivers
saw California Clean Air Day freeway signs statewide

124 outlets and publications
covering California Clean Air Day statewide

Our 2019 impact

1.25 million actions to clear the air
up 25% from 1 million actions in 2018

100,000+ additional transit riders
compared to an average Wednesday

90 public California Clean Air Day events
engaging tens of thousands of Californians in person

316 pledged companies and organizations
engaged their employees and communities for clean air

Join All of California

Join your fellow Californians in pledging to take at least one action on Clean Air Day to help clear the air so you can breathe better support your community’s health.

Your pledge will be part of a million actions to clean the air across California. Together, we can clear the air!

Recent News

2018 Inaugural Sponsors

Bay Area Air Quality Management District

Blue Shield of California

County of Los Angeles

County of Los Angeles Public Health

County of Los Angeles Public Works

Dignity Health

Foothill Transit

Los Angeles Department of Water & Power

Los Angeles World Airports

Metro Los Angeles

Comcast NBCUniversal

The Port of Hueneme


Southern California Edison