2025 marks China’s cleanest air quality since it started tracking it nationwide, as officials shared the news at a press conference, pointing to solid progress in all the main pollution indicators, and it’s clear that years of tougher policies and tighter emissions controls are finally paying off. According to Sigma Earth portal, they also pointed out that all three major air quality indicators improved, and it’s clear that city air is getting cleaner, with progress that looks real and steady.
In 2025, cities across China saw average PM2.5 levels drop to just 28 micrograms per cubic meter, the lowest since tracking began. Air quality hit a new high, with 89.3% of days rated “good,” and heavily polluted days fell to just 0.9%, the best on record.
From 2021 to 2025, China cut its nationwide PM2.5 concentration by 20%, which is no accident; it’s the payoff from tougher emission standards, a stronger push for clean energy, and better monitoring. People in charge say these results prove that national and regional efforts are working together, and year after year, pollution keeps dropping, setting the stage for even cleaner skies in the future.
The economic and environmental performance of cities can be viewed positively, as evidenced by data from 29 cities with a total GDP exceeding 1 trillion yuan and a corresponding average PM2.5 concentration of 27.8 micrograms per cubic meter; both figures are lower than the national average levels.
The governments of these wealthier economies will tell us that they have made great progress in terms of both environmental improvements in cities and in terms of the economy going forward from 2021 to 2025 in an economically viable manner, illustrating how high levels of economic development and strong environmental accountability can co-exist without trade-offs between them.
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