According to comprehensive US media reports, on March 4, local time,The U.S. State Department announced that it will stop the "Global Air Quality Monitoring" project, and U.S. embassies and consulates abroad will stop publishing air quality data.The so-called "Global Air Quality Monitoring" project was founded in 2008. During the operation of the project, more than 80 U.S. embassies and consulates around the world installed air quality monitors on their roofs and shared the collected air data in real time.

According to Agence France-Presse, the U.S. State Department announced on the 4th that it would no longer be able to continue releasing air pollution data due to "budget constraints." The U.S. State Department stated that historical data will be retained on a website of the Environmental Protection Agency, but real-time data stopped updating on the 4th and will remain down until related projects are re-funded. According to reports, U.S. President Trump has significantly reduced overseas and environmental spending after taking office. As of press time, the page previously used to publish relevant data had been displayed as "the page does not exist."The U.S. Embassy in China began monitoring and releasing Beijing’s air quality data in 2008, Guangzhou’s air quality data in 2011, and the Consulate in Shanghai also began releasing data in 2012. A spokesperson for the Chinese Ministry of Foreign Affairs stated at the time that foreign embassies and consulates in China do not have the legal qualifications to conduct environmental monitoring and release relevant data in China, nor do they have the professional capabilities and conditions to engage in environmental monitoring.