The Air Quality Index Acquiring Ability system (the AQILITY) is an independently developed air quality monitoring system in Singapore with hobbyist-level electronics such as the Shinyei PPD42NS dust sensor and the MQ lineup of gas sensors.

Indoors, sensor displaying a calculated concentration of of particles from the number of particles and particle size detected. Sensor is PPD42NS. IMP001 to push the measurements to thingSpeak