SmogRank / Countries
Air pollution by country
Countries sorted by their typical measured city (the median city's PM2.5), this year. Only cities with monitors we can use are counted, so a country's number describes its measured cities, not the whole country.
| Country | Cities | Median µg/m³ |
|---|
Updated 2026-10-01 02:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.