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 17 May 2025: Schiedam 11.4 µg/m³, The Hague 10.9 µg/m³ and 's-Gravenzande 9.7 µg/m³.
- 1SchiedamSouth Holland11.4
- 2The HagueSouth Holland10.9
- 3's-GravenzandeSouth Holland9.7
- 4Velsen-ZuidNorth Holland9.6
- 5VenrayLimburg9.4
- 6TilburgNorth Brabant9.1
- 7RotterdamSouth Holland9.0
- 8SpijkenisseSouth Holland8.7
- 9MaassluisSouth Holland8.7
- 10VenloLimburg8.6
- 11RidderkerkSouth Holland8.5
- 12NoordwijkerhoutSouth Holland8.4
- 13HillegomSouth Holland8.4
- 14BredaNorth Brabant8.3
- 15MedemblikNorth Holland8.1
- 16ZwanenburgNorth Holland7.7
- 17VelserbroekNorth Holland7.7
- 18AmsterdamNorth Holland7.6
- 19WaalreNorth Brabant7.4
- 20LunterenGelderland7.4
+ 13 more cities, 7.4 µg/m³ and below
Not counted on this day, too few days measured: Badhoevedorp since 17 May 2025, Wormer since 22 Apr 2025 and Purmerend since 22 Apr 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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.