Dangers in Our Air: Mapping Chicago’s Air Pollution Hotspots

Chicago’s air quality is among the worst in the U.S., and the city has several local hotspots for particulate matter 2.5 — the tiny particles that come from diesel trucks and industry and enter people’s lungs and blood, causing significant health problems. Between April 2021 and March 2023, the tech company Microsoft installed and monitored 115 air quality sensors across Chicago. We worked with Chicago newsrooms, including the Cicero Independiente, WBEZ and the Chicago Sun-Times, ​​to analyze this data for a series of stories on the city’s comparatively poor air quality. We then installed our own air quality sensors in Chicago neighborhoods that lacked coverage in the Microsoft network — and looked for trends and spikes in pollution.

11 Articles

Microsoft abandons project mapping Chicago’s air pollution

Microsoft abandons project mapping Chicago’s air pollution

MuckRock and its partners have investigated neighborhood-level air pollution, unexplained pollution spikes, and smoky air on the Fourth of July using Microsoft’s Project Eclipse data. But after two years of offering a view of Chicago’s air pollution that residents had never before seen, the project has ended with little details on what comes next.

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We want to hear from residents of Cicero about their experiences with air pollution

We want to hear from residents of Cicero about their experiences with air pollution

MuckRock and the Cicero Independiente are also looking for volunteers who are interested in having a free air quality sensor installed outside their home or business. Fill out the form in the article for more information.

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‘This is really concerning:’ Chicago air quality sensors show disparities across the city — and unexplained spikes in pollution

‘This is really concerning:’ Chicago air quality sensors show disparities across the city — and unexplained spikes in pollution

Nearly two years after the tech company Microsoft installed more than 100 air quality sensors atop bus shelters across Chicago, a MuckRock analysis of the data documents the neighborhood-by-neighborhood hotspots and disparities — and raises questions about how air pollution continues to affect the city’s fenceline communities.

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