The Department of Environmental Protection (MassDEP) awarded the BOH a grant to purchase and install 5 Purple Air sensors in 5 outdoor locations. The first sensor at Town Hall is operating with these locations to add – French Park, the Free Library, the Water Department, and Greenagers. Sensors are programmed to perform for at least one year on a generally uninterrupted basis. Real-time sensor readings will appear publicly on purpleair.com under Maps>Real Time Map. Click on the current Town Hall site (#18) to see that location’s latest air quality reading.