Testing Air Quality Sensors

Air Quality Sensor Output

I tested 7 low-cost air quality sensors in a couple of indoor and outdoor locations throughout Pittsburgh (here's more on sensor setup).

Baseline Output in my Lab

After a few days of preheating, I tested the baseline output in my lab.

Average Output

Average Output

Outside CMU NSH Building

Sensors on a bench, right outside the Carnegie Mellon NSH Building

Average Output

Average Output

Forbes & Morewood Bus Stop

Sensors on the ground, a few feet away from Forbes & Morewood bus stop

Average Output

Average Output

Parking Garage

Sensors on the ground in a parking spot in a garage

Average Output

Average Output

Laundry Room

On a washing machine in my building basement

Average Output

Average Output