
1230 Sumner Road, SE
Very cool, from the DC Department of Energy and Environment:
“These solar-powered air monitoring park benches measure real-time pollution data, tracking PM2.5, ozone, temperature, and humidity to provide localized air quality information.”
Check out the monitoring results here.
Locations:
Petworth Recreation Center (Ward 4)
Crummell School (Ward 5)
Deanwood Community Center (Ward 7)
Barry Farm Recreation Center (Ward 8)
The National Zoo (Ward 3)

“DOEE manages a variety of air quality sensors in the District, including our six station, 24-hour air monitoring network that measures air pollutants and meteorological conditions. The data that comes from these highly sensitive and accurate stations is used to determine the District’s compliance with the U.S. Environmental Protection Agency’s (EPA) national ambient air quality standards.
The four 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 real-time, reliable readings on levels of fine particle pollution and ozone, as well as meteorological data.”