Clean Air Day

California Clean Air Day

Every year on the first Wednesday of each October, the Coalition for Clean Air hosts California Clean Air Day to reduce air pollution. The statewide annual event is built on the idea that shared experiences unite people to take action and create new habits to improve air quality. 

At SANDAG, we encourage the San Diego region to take the pledge and commute for clean air by walking, biking, carpooling, or riding transit on Clean Air Day.

Thank you to all those who pledged to commute for clean air on Wednesday, October 2, 2024. Stay tuned and take action on Clean Air Day 2025!  

On-going Clean Air Day Promotions

Purchase a New Bike at a Discount: 
Join or Start a New Vanpool: 
  • Commute with Enterprise: Preregister for any vanpool by Monday, October 21 and receive $200 fuel card or rental credit.
  • Green Commuter: Mention Clean Air Day when you start your vanpool in October to receive 50% off the first month and 20% off the next two months. (Must vanpool for three months and enroll in autopay to qualify for the promotion. Valid while supplies last.) 

Why Pledge to Clean the Air? San Diego deserves better!