Environmental Sensing in South Bend

How we’re using new technology to measure our surroundings

Patrick McGuire
Innovation in South Bend
3 min readMar 28, 2024

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A TELLUS monitor captures environmental data on the Charles Black Community Center

In the City’s work to empower all of our residents to thrive, good data is essential. Data tells us where, when, and how we can respond to the needs of our community, and whether that response is having the right impact. With advances in technology, new types of data help us better understand and respond to those needs, especially where existing data has been limited.

Currently, the City is using new technology to provide better data on air quality and urban heat in South Bend neighborhoods, both of which play a key role in resident health and well being. Air quality and heat can change dramatically between parts of the city and times of day, but existing data come from stations that measure at one location or satellite models that provide a snapshot at a single point in time.

To get measurements in real time from many locations citywide, we are turning to “internet of things”-style devices. This technology uses small, low-cost sensors that are connected to the internet, allowing them to “talk” with each other and improve their accuracy.

Our sensors being prepared for installation, courtesy of TELLUS

In South Bend, we are partnering with TELLUS Networked Sensor Solutions to install 14 of their AirU Pro sensors, with more to come. These sensors are going up on fire stations, light poles, park facilities, and community centers — you may see one in your neighborhood soon!

Our map of 14 initial sensor sites (subject to change — for the most up to date map, click here)

Though small, these mighty devices have 13 independent sensors measuring the environment. Minute by minute, they measure the levels of fine particles, harmful chemicals, and greenhouse gases in the air, as well as temperature, humidity, noise, and pressure. These measurements then go into a data model which projects air quality levels for all of South Bend. We are currently working with TELLUS to calibrate the data and are preparing data resources to share with the public.

A TELLUS model of fine particle levels on a good air quality day, drawing from City sensor data

We are eager to use this data to inform both City departments and the members of our community, and we look forward to sharing more information as this project grows! For more information, please contact aqsensors@southbendin.gov.

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