Air Quality

As the Bay Area celebrates California Clean Air Day on Wednesday, Oct. 1, MTC is encouraging people to take the Clean Air Pledge and ride transit, especially to upcoming events including this weekend...

Communities across California are celebrating California Clean Air Day on Wednesday, October 2, 2024. Do your part for cleaner air in the Bay Area: Take public transit or carpool instead of driving...

Join MTC, the Association of Bay Area Governments (ABAG), the Bay Area Air Quality Management District (Air District) and communities all across California: Take the Clean Air Pledge to participate in...

Have you noticed the amazing winter sunsets? Those beautiful colors come from light bouncing off particles in the atmosphere, often caused by pollution from vehicles and fires. MTC partners with the...

Vital Signs data shows short-term improvement for our air quality. That's largely because of California's strict clean air standards and successful Spare-the-Air days enforced by the Bay Area Air...

A Winter Spare the Air Alert has been issued. The Winter Spare the Air program notifies residents when particulate matter levels are anticipated to be unhealthy. On these high pollution days, the Bay...

New updates to MTC's Vital Signs performance monitoring initiative for five indicators related to the Bay Area's land & people and air quality have been released. Learn more on the Bay Area's latest...

After achieving strong bi-partisan support in the State Legislature the Bay Area Commuter Benefits Program has been signed into law by Governor Edmund G. Brown, Jr.

MTC released a list of about 700 Bay Area transportation projects—a total of approximately $6.6 billion in committed federal, state and local funding for the four-year period through 2020.

A Spare the Air Alert has been issued. Please find alternatives to driving alone to work, as reducing traffic and tailpipe exhaust can improve air quality and keep our air healthy.