SmogRank / History / City race
Cities in The Netherlands, worst air first, day by day
Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.
The worst cities in The Netherlands for PM2.5 over the 30 days to 14 Jan 2025: Schiedam 13.8 µg/m³, Maarssen 13.4 µg/m³ and Breukelen 13.4 µg/m³.
- 1SchiedamSouth Holland13.8
- 2MaarssenUtrecht13.4
- 3BreukelenUtrecht13.4
- 4Velsen-ZuidNorth Holland11.7
- 5The HagueSouth Holland11.6
- 6TilburgNorth Brabant10.7
- 7BredaNorth Brabant10.4
- 8BadhoevedorpNorth Holland10.1
- 9RotterdamSouth Holland9.9
- 10AmsterdamNorth Holland9.9
- 11LunterenGelderland9.8
- 12BarneveldGelderland9.8
- 13VenrayLimburg9.6
- 14's-GravenzandeSouth Holland9.6
- 15ZwanenburgNorth Holland9.5
- 16WaalreNorth Brabant9.5
- 17EindhovenNorth Brabant9.5
- 18VelserbroekNorth Holland9.5
- 19SpijkenisseSouth Holland9.1
- 20ZaanstadNorth Holland9.0
+ 13 more cities, 9.0 µg/m³ and below
Not counted on this day, too few days measured: Wormer since 13 Jan 2025, Ridderkerk since 13 Jan 2025 and Purmerend since 13 Jan 2025.
Cities counted each day
A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.
Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites; we are building the readers for them. Most cities there are missing from this board, not clean. Why.