The embassy data is published on its own Twitter feed, and while the U.S. doesn't actively promote the information, it has slowly been getting more attention from Beijing residents concerned about the city's air quality. "The U.S. Embassy has an air quality monitor to measure PM 2.5 particulates on the Embassy compound as an indication of air quality," says Susan Stevenson, a State Department spokesperson. "This monitor is a resource for the health of the Embassy community." She cautions that citywide analyses cannot be done from a single machine, but because the embassy has the data available, it makes it available to others.
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