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 11 Sep 2025: Tilburg 8.2 µg/m³, Schiedam 8.2 µg/m³ and Badhoevedorp 7.6 µg/m³.
- 1TilburgNorth Brabant8.2
- 2SchiedamSouth Holland8.2
- 3BadhoevedorpNorth Holland7.6
- 4VenrayLimburg6.5
- 5VenloLimburg6.3
- 6Velsen-ZuidNorth Holland6.2
- 7MedemblikNorth Holland6.2
- 8's-GravenzandeSouth Holland6.0
- 9NoordwijkerhoutSouth Holland6.0
- 10HillegomSouth Holland6.0
- 11RotterdamSouth Holland5.9
- 12ZwanenburgNorth Holland5.8
- 13RidderkerkSouth Holland5.8
- 14VelserbroekNorth Holland5.8
- 15BredaNorth Brabant5.7
- 16SpijkenisseSouth Holland5.5
- 17AmsterdamNorth Holland5.5
- 18WaalreNorth Brabant5.2
- 19MaassluisSouth Holland5.2
- 20LunterenGelderland5.2
+ 14 more cities, 5.2 µg/m³ and below
Not counted on this day, too few days measured: Wormer since 10 Sep 2025 and Purmerend since 10 Sep 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.