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 16 Jun 2025: The Hague 8.4 µg/m³, Medemblik 8.1 µg/m³ and Noordwijkerhout 7.7 µg/m³.
- 1The HagueSouth Holland8.4
- 2MedemblikNorth Holland8.1
- 3NoordwijkerhoutSouth Holland7.7
- 4HillegomSouth Holland7.7
- 5ZwanenburgNorth Holland7.6
- 6VelserbroekNorth Holland7.6
- 7's-GravenzandeSouth Holland7.5
- 8BadhoevedorpNorth Holland7.5
- 9VenrayLimburg7.4
- 10RotterdamSouth Holland7.4
- 11AmsterdamNorth Holland7.3
- 12RidderkerkSouth Holland7.2
- 13TilburgNorth Brabant7.1
- 14Velsen-ZuidNorth Holland7.0
- 15BredaNorth Brabant6.8
- 16SpijkenisseSouth Holland6.7
- 17ZaanstadNorth Holland6.4
- 18MaassluisSouth Holland6.4
- 19LunterenGelderland6.0
- 20BarneveldGelderland6.0
+ 12 more cities, 5.8 µg/m³ and below
Not counted on this day, too few days measured: Venlo since 15 Jun 2025, Schiedam since 15 Jun 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.