Case studies

Learn from success stories in other cities

Cities can learn a great deal from what has worked elsewhere. Peer‑to‑peer learning can help your city or town understand which solutions worked, where and why, so you can evaluate whether those approaches could work in your own community. This section features case studies of effective recent solutions, highlighting adaptable strategies, challenges that had to be overcome and key lessons learned.

Launching an air pollution ordinance in Cleveland

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More case study resources

Washington DC air pollution heatmap
Nitrogen dioxide pollution contributes to approximately 3,500 new childhood asthma cases every year in the Washington D.C. metro region.
New York City air pollution heatmap
Nitrogen dioxide pollution contributes to approximately 21,000 new childhood asthma cases every year in the New York metro region.
Philadelphia air pollution heatmap
Nitrogen dioxide pollution contributes to approximately 4,000 new childhood asthma cases every year in the Philadelphia metro region.
Chicago air pollution heatmap
Nitrogen dioxide pollution contributes to more than 10,000 new childhood asthma cases every year in the Chicago metro region.
Boston air pollution heatmap
Nitrogen dioxide pollution contributes to approximately 2,700 new childhood asthma cases every year in the Boston metro region.
Austin air pollution heatmap
Nitrogen dioxide pollution contributes to more than 1,800 new childhood asthma cases every year in the Austin metro region.
Baltimore air pollution heatmap
Nitrogen dioxide pollution contributes to more than 1,300 new childhood asthma cases every year in Baltimore metro region.

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