SOURCE: Katie Pyzyk, Smart Cities Dive

From wildfire smoke to traffic pollutants, air quality sensors track data to help city leaders make informed interventions, and their use across cities is growing.

Cities including Chicago, Seattle and Portland, OR have launched air quality sensor pilot programs. Chicago’s project began this year as part of its Array of Things (AoT) connected urban sensor program. The city currently has 100 devices installed and an additional 100 will be operational by year’s end, on the way to the ultimate goal of 500.

The existing units measure “seven different gases including ozone, carbon dioxide and nitrogen by using experimental electrochemical gas sensors. They also have particulate matter sensors,” Charlie Catlett, senior computer scientist at Argonne National Laboratory and the University of Chicago, told Smart Cities Dive.