City comparison
Hong Kong vs Guangzhou air quality
Live AQI comparison between Hong Kong and Guangzhou. Data updates every 15 minutes.
Hong Kong and Guangzhou differ by 10 AQI points right now. Hong Kong has cleaner air at this moment.
What drives air quality in Hong Kong and Guangzhou
Hong Kong
Hong Kong's air quality blends local traffic and port emissions with regional smog transported from the wider Pearl River Delta industrial belt. When northerly winds prevail, PM2.5 and ozone can climb even in neighbourhoods far from busy roads.
Guangzhou
Guangzhou sits at the heart of one of the world's largest manufacturing regions, where traffic, port logistics, and industrial activity contribute to PM2.5 and ozone episodes. Regional haze can persist across the delta during weak-wind periods.
Both cities are shaped by different combinations of traffic density, terrain, weather patterns, and seasonal events, which is why the same AQI band can feel different on the ground. Checking live readings rather than relying on reputation or past visits is the most reliable way to plan travel, exercise, or outdoor time between the two.
Live AQI from Open-Meteo (CAMS). Conditions change hourly — refresh for the latest readings. South African cities may show WAQI station data on their dedicated pages.