Air Tricorder The Portable AQI Sensor
Air Tricorder is a portable AQI sensor that analyzes airborne PM2.5 size dust particles and lets you check the local quality of the air wherever you are. Healthy levels are at an AQI average of less than 50. If the reading exceeds a healthy level, then it is best to wear N95 masks or invest in a good air purifier in your home and bedroom.