Free Transit Across Southern California Today for California Clean Air Day

LOS ANGELES — Leave the car at home today — Southern California’s transit agencies are picking up the tab. For California Clean Air Day this Wednesday, October 7, LA Metro is offering free rides on all of its buses and trains, plus free Metro Micro trips and free 30-minute Metro Bike Share rides. Metrolink is waiving fares across its entire six-county, 545-mile system, and OCTA is making OC Bus free all day. From Santa Monica to San Clemente, the cheapest way to get around today is the one that doesn’t burn gas.

The fare holiday is timed to an uncomfortable truth about the region’s air: hotter weather supercharges ozone — the main ingredient in smog — while wildfire smoke adds particle pollution on top of it. Transportation remains California’s largest source of greenhouse gas emissions. So once a year, the region’s transit systems make the cleanest choice the easiest one, too: just get on.

MetroFree buses, trains, bikes and Micro

LA Metro’s offer is the simplest: everything rides free, all day. Metro buses and trains are fare-free today — no tapping at bus fare boxes or rail validators, per Metro’s official rider blog, The Source. Metro Micro, the on-demand shared-ride service, is free too: just book your trip in the Micro app, no code needed.

Metro Bike Share is also free, with one extra step. Select “1-Ride” at a kiosk, online or in the Metro Bike Share app and enter code 100726 for a free 30-minute ride. Metro notes that a credit or debit card is required to unlock a bike, and standard usage fees apply for rides longer than 30 minutes — so plan a tidy loop, or dock and re-check a bike if you’re making a longer day of it. For trip planning, Metro points riders to its Metro app.

MetrolinkNo ticket needed, six counties wide

Metrolink’s free-ride day covers the whole map. The regional rail agency is waiving fares throughout its six-county system and on its Arrow service today, so passengers can board at any Metrolink station without a ticket and ride the full 545-mile network. That opens up genuine day-trip territory: beach towns along the coast, historic downtowns in the Inland Empire, or a car-free ride into L.A. Union Station with a free Metro connection on the other end.

Metrolink frames the timing around the pain at the pump. The statewide average for regular gasoline reached $6.39 this week, up more than $1.70 from the same time last year, according to AAA figures cited in the agency’s announcement. “With families across Southern California feeling the impact of higher gas prices, California Clean Air Day is an especially timely opportunity to experience all that public transportation can offer,” said Metrolink Board Chair Doug Chaffee. One note for planners: Amtrak trains are not part of the free-ride offer, so check timetables and stick to Metrolink departures.

Orange CountyOC Bus rides free, Rideshare Week rolls on

OCTA is making all OC Bus fixed routes free today. Riders with a Wave card or the Wave mobile app should tap or scan as usual when boarding — they simply won’t be charged — and riders without a Wave account can board for free outright, according to OCTA. The agency notes its OC Bus fleet runs on clean, renewable energy and is moving toward a zero-emission future.

The timing doubles up: Clean Air Day falls during Rideshare Week, October 5–9, and OCTA says free Clean Air Day rides on OC Bus and Metrolink count toward the week’s pledge to replace at least one solo drive with transit, carpooling, vanpooling, biking or walking. Pledge-takers are entered for a chance to win a Commuter Essentials Kit stocked with Apple AirPods, a travel backpack, a water bottle, a car charger and an Amazon Kindle.

The regionWho else is free today

The fare holiday stretches well beyond the big three. The Riverside Transit Agency is waiving fares, as is the North County Transit District in San Diego County — free all day on the COASTER, SPRINTER, BREEZE, FLEX and NCTD+. Santa Monica’s Big Blue Bus is offering free rides and hosting a “Try-A-Commute” gathering at City Hall from 11 a.m. to 1 p.m. to nudge commuters into swapping one drive for transit. Pasadena Transit and Pasadena Dial-A-Ride are free today as well, capping a month of SoCal Transit Month promotions, and Foothill Transit is in on the free rides too.

The practical upshot: for most of urban Southern California, there is no financial excuse left today for a solo drive. The agencies are betting that one free, easy day is enough to convert a few drivers into at least occasional riders — and with gas above six dollars, the math is doing some of the persuading itself.

Why todayClean Air Day, explained

California Clean Air Day falls on the first Wednesday of October every year and is organized by the nonprofit Coalition for Clean Air. The premise is simple: shared, visible actions — taking transit, walking or biking instead of driving alone, and taking the Clean Air Pledge — add up. The campaign says more than 73,000 pledges have been made since Clean Air Day began in 2018, including more than 22,000 pledges from over 5,300 Californians last year alone.

The urgency is local. The Los Angeles–Long Beach area again ranked as the most ozone-polluted metropolitan area in the nation in the American Lung Association’s 2026 “State of the Air” report — a distinction the region has now held in 26 of the report’s 27 years. Metro’s own explainer puts it plainly: Southern California’s air has improved dramatically over the decades, but hotter weather encourages ozone formation, wildfire smoke adds harmful particle pollution, and emissions from cars, trucks, ships and other sources remain a challenge, particularly for communities near busy roads and freight corridors. As we noted this morning, L.A. just logged its fifth straight day above 100 degrees — exactly the kind of heat that cooks smog into the afternoon sky.

Free fare days are becoming a transit tradition in the region: Metrolink also waives fares annually on Transit Equity Day (February 4) and Earth Day (April 22). But today’s is the widest — a coordinated, region-wide invitation to try the train, the bus, or the bike, on the house. If you’ve been curious about ditching the car for a commute, there will not be a cheaper day to find out.