How loud is Guangzhou?

Guangzhou anchors the Pearl River Delta — the largest urban agglomeration on earth — and its noise profile is the megaregion’s: elevated expressways threading residential towers, round-the-clock logistics serving the factory belt, and construction as a permanent climate. The 2017 Mimi Worldwide Hearing Index, combining hearing-loss data with WHO and SINTEF noise figures, ranked Guangzhou worst for noise pollution among the 50 cities it scored.

China answered city noise nationally with the revised Noise Pollution Prevention and Control Law (2022), which is unusually concrete: night construction requires permits, residential renovation hours are restricted, and — famously — public square-dancing loudspeakers became a regulated activity after years of intergenerational acoustic warfare in city plazas.

Under national standard GB 3096, mixed residential-commercial zones are capped at 60 dB by day and 50 dB at night; Guangzhou’s monitoring, like every Chinese megacity’s, shows main corridors above that. The structural quieting — metro expansion, EV adoption at scale — is further along here than in most cities on this list.

Guangzhou noise: the specifics

• Rated worst of 50 cities for noise pollution in the 2017 Mimi Worldwide Hearing Index.
• China’s 2022 noise law requires night-construction permits and regulates square-dancing loudspeakers.
• National standard GB 3096 caps mixed urban zones at 60 dB day / 50 dB night.
• Estimated 69–82 dB daytime range vs. the WHO’s 53 dB L_den guideline — roughly 23 dB over.