Philadelphia officials have introduced a real-time air-quality network that collects data from solar-powered sensors installed at strategic points across every neighborhood, writes Frank Kummer for The Philadelphia Inquirer.
A new online dashboard allows residents to monitor outdoor air quality before going for a walk, run, or park visit. The system gives alerts when pollution levels surge, for instance, if a junkyard fire increases particulates in the air.
“Starting now, every resident in Philadelphia will be able to see, almost in real time, the air quality in their own neighborhood,” said Mayor Cherelle Parker.
The system uses weatherproof sensors installed on utility poles every 1.5 miles to monitor the air for two key pollutants: fine particulate matter (PM2.5), which can reach deep into the lungs and trigger respiratory issues, and nitrogen dioxide (NO2), a contributor to ozone formation.
The Breathe Philly initiative debuted at Stinger Square Park in Grays Ferry on Wednesday, February 18, with Parker, City Council members, and officials from the Philadelphia Department of Public Health’s Air Management Services in attendance. The system, supported by the nonprofit Philadelphia City Fund, will require $90,000 in annual city funding.
Read more about the Breathe Philly initiative and its role in addressing environmental justice in The Philadelphia Inquirer.
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Editor’s Note: This post was originally published on PHILADELPHIA.Today in February 2026.
