CAB installs PM2.5 monitor

The Clean Air Board announced that it has installed a new air quality monitor in downtown Carlisle near the Square.  The PM2.5 sensor will report its readings 24 hours a day.  The real-time data can be viewed on the PurpleAir network.  The PurpleAir™ sensor is a device that uses two laser particle counters to capture and record data about microscopic particulate matter (PM2.5) suspended in the air.  The sensor uses WiFi connectivity to display real-time air quality readings on the PurpleAir™ Map, which is a  world-wide map of monitors where data can be shared with the public.