Air Quality Around the World
Air-quality guides for major world cities — dominant pollutants, seasonal patterns, notable episodes, and the local air-quality index each city uses. Different countries report on different scales; our AQI Around the World guide explains why an index of 100 can mean very different things in different places. Looking for US metros instead? See the US cities index.
United Kingdom · DAQI
London
Nitrogen dioxide (NO₂, traffic), PM2.5, summer ozone.
Read →AQI vs. UV Index
Two different outdoor-safety numbers, explained side by side — plus UV Report, Smog Report's sister app.
Read →EVs and Smog
How tailpipe NOₓ drives ozone and PM2.5 — and how electric driving cuts it. Featuring mytesla.io for Tesla owners.
Read →France · European AQI
Paris
Nitrogen dioxide (NO₂, traffic), PM2.5 / PM10, summer ozone.
Read →Germany · European AQI
Berlin
Nitrogen dioxide (NO₂, traffic), PM2.5 / PM10.
Read →Spain · European AQI
Madrid
Nitrogen dioxide (NO₂, traffic), summer ozone, Saharan dust (PM10).
Read →Italy · European AQI
Milan
PM2.5 / PM10 (among the highest in Western Europe), NO₂.
Read →Rome
Nitrogen dioxide (NO₂, traffic), PM10 / PM2.5, summer ozone.
Read →Netherlands · European AQI
Amsterdam
Nitrogen dioxide (NO₂, traffic), PM2.5.
Read →Poland · European AQI
Warsaw
PM2.5 / PM10 and benzo(a)pyrene (winter solid-fuel heating).
Read →Kraków
PM2.5 / PM10 and benzo(a)pyrene — among the worst in Europe.
Read →Singapore · PSI
Singapore
PM2.5 (haze), PM10, ozone.
Read →India · AQI
Delhi
PM2.5, PM10 — among the highest urban particulate levels of any major city on Earth.
Read →Mumbai
PM2.5, PM10.
Read →Bengaluru
PM2.5, PM10, NO₂ (traffic).
Read →Kolkata
PM2.5, PM10.
Read →Pakistan · AQI
Lahore
PM2.5 — among the highest of any major city.
Read →Bangladesh · AQI
Dhaka
PM2.5 — among the highest of any capital city.
Read →South Korea · CAI
Seoul
PM2.5, PM10 (including Asian dust), ozone, NO₂.
Read →Japan · AQI
Tokyo
Photochemical ozone (summer), NO₂, PM2.5.
Read →Osaka
Photochemical ozone (summer), NO₂, PM2.5.
Read →China · AQI
Beijing
PM2.5, spring dust (PM10), winter coal/heating pollution.
Read →Hong Kong · AQHI
Hong Kong
Roadside NO₂, PM2.5, ozone.
Read →Indonesia · ISPU
Jakarta
PM2.5.
Read →Thailand · AQI
Bangkok
PM2.5.
Read →Philippines · AQI
Manila
PM2.5, NO₂ (traffic).
Read →Australia · AQI
Sydney
PM2.5 (bushfire smoke), summer ozone.
Read →Melbourne
PM2.5 (bushfire and planned-burn smoke), ozone, occasional dust.
Read →Canada · AQHI
Toronto
PM2.5, summer smog (ozone), NO₂.
Read →Vancouver
PM2.5 (wildfire smoke), low ozone.
Read →Mexico · index
Mexico City
Ozone, PM2.5.
Read →Brazil · index
São Paulo
Ozone, PM2.5, NO₂ (Latin America's largest vehicle fleet).
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