Compare air quality between cities
Side-by-side AQI, PM2.5, PM10, ozone and NO2 for any two cities. Live readings, updated every 30 minutes from open environmental data.
Featured comparisons
Bangkok vs Chiang Mai
Thailand · Thailand
Delhi vs Mumbai
India · India
Beijing vs Shanghai
China · China
Los Angeles vs New York
United States · United States
London vs Paris
United Kingdom · France
Tokyo vs Seoul
Japan · South Korea
Sydney vs Melbourne
Australia · Australia
Bangkok vs Hanoi
Thailand · Vietnam
Delhi vs Lahore
India · Pakistan
Mexico City vs Sao Paulo
Mexico · Brazil
Milan vs Berlin
Italy · Germany
Build your own comparison
Pick any two cities below. URLs follow the pattern /compare/{country}-{city}/vs/{country}-{city}.