ScienceBeyond blue skies: The green transition behind China’s cleaner air

China is marking the International Day of Clean Air for blue skies after achieving its best annual air quality since national monitoring began. From 2021 to 2025, average PM2.5 fell 20% while GDP grew about 30%. Cleaner energy, industrial retrofits, new-energy vehicles, regional coordination and tighter standards drove the gains, though coal power and ozone remain challenges.

Chinaair qualitygreen transitionPM2.5

CCGTN★★★☆☆2026-09-07 13:07Original