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“Village Green” Park Bench Monitors
In 2026 DOEE installed four air quality park bench monitors in overburdened sections of the District. The new monitors joined the original pilot bench located within the National Zoo.
These solar-powered park bench monitors were developed by the EPA as a unique way to engage the public in measuring air quality and weather. They provide near real-time, reliable readings on levels of fine particle pollution, ozone, and black and brown carbon, as well as meteorological data. Learn more and see the data >>
Purple Air Sensor Loan Program
DOEE is working to better track localized particulate matter air pollution in local neighborhoods by involving residents in the PurpleAir sensor project. Learn more about the program >>
Clarity Node Sensor Network
DOEE has also deployed several dozen Clarity nodes throughout the District. In addition to PM2.5, these nodes can also measure NO2, CO, Ozone, and wind. These solar-powered sensors are deployed at host sites including libraries, public charter schools, universities, and businesses. In combination with our other monitors and sensors, the Clarity node network will help DOEE improve our awareness of hyper-local air quality for multiple key criteria air pollutants. Visit the map of our current Clarity Node network.
Additional Sensor Testing
DOEE periodically tests other sensors to see what other capabilities would enable us to achieve additional air quality awareness and improvements. Examples include sensors that can measure VOCs, Black Carbon, and ultrafine particulates.