2 Day Forecast

Air Quality Forecast
Friday, October 17 at 10:21 AM
Coast and Central Bay
South Central Bay
Santa Clara Valley

Read an explanation of the color-coded AQI scale categories used in the air quality forecast.

View the extended Five-Day Air Quality Forecast.

Find out which reporting zone your city is located in.

Ozone Exceedances


Summer Spare the Air Alerts
National 8-Hour Ozone Excess Days
California 1-Hour Ozone Excess Days
California 8-Hour Ozone Excess Days

Spare the Air in the San Francisco Bay Area 


There's a better way to work!  Look for ways to share, shorten, or change your commute so you spend less time alone in your car and more time doing what you want to do.  Be "in the know" by carpooling with coworkers. Take transit where you can finally finish that novel or clean out your inbox.  Ride your bike to work and let your commute be your new gym.

Find a better way to work and enjoy the many perks experienced by commuters who take transit, carpool, bike, or walk to work instead of driving alone.

Summer Spare the Air Alerts

Spare the Air logo

The Bay Area Air Quality Management District issues Spare the Air Alerts when ozone pollution is forecast to reach unhealthy levels in the Bay Area.

The 2014 Spare the Air smog season runs from May through October.

To find out when a Spare the Air Alert is in effect, register for email AirAlerts, call 1(800) HELP-AIR, download the Spare the Air app or connect with Spare the Air on Facebook, Twitter and other social media.  Spare the Air Alerts will also be posted on the Spare the Air and www.baaqmd.gov websites.

Spare the Air Every Day 

Help reduce pollution and prevent Spare the Air Alerts! Here are some great ways to Spare the Air and find a better way to work:

Commute Tips

Visit stacommutetips.org to get all the information you’re looking for about commute programs and incentives available where you live and work.

Walk or Ride Your Bike

Save money and improve your health, too! Use the Spare the Air app’s Bike Route Planner or the 511 Bike Mapper to plan your trip.

Take the Bus, Ferry or Train

Save gas and money – and reduce stress! Find the fastest route on 511 Trip Planner.


Commute with colleagues or neighbors instead of driving alone. Find your rideshare match at 511.org.

Skip a Trip or Link Your Errands

By combining or eliminating trips, you reduce pollution in addition to saving gas and time.


Bay Area Commuter Benefits Program


The Bay Area Commuter Benefits Program launched on April 1. Bay Area employers with 50 or more employees are now required to register and offer commuter benefits to their employees by September 30 in order to comply.  See informational video.

2013 Annual Report

The Bay Area Air District's Annual Report is available online.


Bay Area Bike Share


The Bay Area Bike Share program is up and running. Members have access to 700 bikes in five Bay Area cities.

San Geronimo Valley Wood Stove Replacement Program

Up to $750 is available.  For more information on this program, see fact sheets in English and Spanish.

Bay Area PEV Ready Website

The Air District's Bay Area Plug-In Electric Vehicle Ready website provides info about PEV and charger resources and grants.

Podcasts and Videos

Listen to Air District podcasts or watch videos about air quality related topics.

Clean Vehicle Guides

Our Clean Vehicle Guides page has links to cleaner-technology car resources.

Spare the Air Apps

Download our iPhone and Android apps and get Spare the Air Alerts and air quality forecasts.