Chicago deploys 277 air monitors to track neighborhood pollution

Chicago has launched a comprehensive air quality monitoring network, installing 277 low-cost sensors across all its neighborhoods. This initiative, known as Open Air Chicago, aims to provide real-time data on atmospheric pollution, specifically tracking nitrogen dioxide and PM2.5 particles.

The project stems from a 2021 civil rights complaint alleging environmental discrimination against Latino and African American communities. Following an agreement with community groups in 2023, the city committed to establishing this continuous record. The official purpose is to verify whether implemented policies effectively improve air quality in historically overburdened areas.

This extensive network represents the largest community air monitoring system in the United States, according to the Chicago Sun-Times. Both residents and city officials can access the live data through an interactive map on the Open Air Chicago website. The map displays the sensors' locations, color-coded to indicate current air quality. At the time of reporting, most monitors showed green, signifying safe levels, with one exception in Summit showing yellow.

Long-term, the program intends to guide the development of permitting guidelines, urban planning, and pollution control strategies. The data is expected to help reduce citizens' exposure to unhealthy air, relying on scientific evidence rather than solely on satellite projections. Serap Erdal, a professor at the University of Illinois in Chicago, noted that the air quality index at a specific location was 31, falling within the EPA's safest category.

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Currently, the index of air quality in this location is 31.