MAT Asphalt in McKinley Park is pictured in a file photo. (WTTW News)
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In a city where air pollution is an environmental justice issue, local grassroots groups are self-installing, funding and monitoring air pollution monitors to understand the specific threats they face and demand change.

(WTTW News)

Chicago has been creeping up the list for a few years. In 2019, the city ranked number 18. Three years later, the levels of pollution landed the Windy City in the 16th spot.