Air Quality

PurpleAir Sensor| AirVisual Sensor

Hourly particulate measurements have been obtained by lower costs sensors (IQAir Node & Purple Air II) at selected locations. These instruments had been assessed well by California’s Southern Coast Air Quality Management District. These instruments record particulate matter, carbon dioxide levels, VOC, temperature and humidity several times an hour.

PurpleAir Sensor

PurpleAir sensors measure airborne particulate matter which are solid particles suspended in air; this includes dust, smoke, and other organic and inorganic particles. PurpleAir sensors use laser particle counters to count the number of particles by particle sizes 0.3, 0.5, 1, 2.5, 5, and 10 μm in real-time, and use the count data to calculate mass concentrations of PM1.0, PM2.5, and PM10.

AirVisual Sensor

Air Visual operates a real time air quality information platform which measure airborne particulate matter (pm2.5), CO2, temperature and humidity using professional-grade laser sensors.