Day One* deployed 4 air quality sensor systems to date in the Pomona area starting in 2025 as part of the Sensor Library Program. All sensors deployed in the community are Aeroqual AQY-R units that measure PM_2.5, PM₁₀, Ozone (O₃) and Nitrogen Dioxide (NO₂). Data from sensors can be graphed, compared, and downloaded using the JustAir dashboard.

*South Coast AQMD has no authority over information or opinions expressed on Community Partner websites.

Day One hosts a community workshop for community members to learn about the project and provide ideas on where to deploy sensors in Pomona

6/26/2026: Fourth sensor system deployed at residence on South White Avenue

5/12/2026: Initial community workshop to introduce project to community members and get further community feedback on sensor deployment locations

1/28/2026: Third sensor system deployed at Palomares Park

1/21/2026: Second sensor system deployed at First Presbyterian Church of Pomona

8/20/2025: Data from first sensor is available for public view on the JustAir dashboard!

8/14/2025: First sensor system deployed at Day One headquarters in Downtown Pomona

8/21/2024: Project Plan for initial vision for Pomona air monitoring project completed

Upcoming community meetings and past events can be found here.

Pomona Sensor Project Outline 

Aeroqual AQY-R Installation Guide v1.0

Pomona Sensor Library - Frist Community Workshop Presentation

Student Presentation - Pomona Sensor Library Preliminary Trends

Loaned equipment is to be used for environmental educational/informational purposes only. Loans do not constitute the endorsement of a commercial product by South Coast AQMD. This equipment is not intended or approved for source identification, regulatory, commercial, or legal purposes.