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 12 May 2026: Schiedam 10.0 µg/m³, Haarlem 9.2 µg/m³ and Badhoevedorp 9.2 µg/m³.
- 1SchiedamSouth Holland10.0
- 2HaarlemNorth Holland9.2
- 3BadhoevedorpNorth Holland9.2
- 4WaalreNorth Brabant9.0
- 5EindhovenNorth Brabant9.0
- 6TilburgNorth Brabant8.9
- 7GroningenGroningen8.7
- 8RotterdamSouth Holland8.2
- 9VenloLimburg8.1
- 10SpijkenisseSouth Holland8.0
- 11's-GravenzandeSouth Holland7.9
- 12RidderkerkSouth Holland7.9
- 13Velsen-ZuidNorth Holland7.8
- 14BredaNorth Brabant7.8
- 15MaassluisSouth Holland7.5
- 16LopikUtrecht7.5
- 17IJsselsteinUtrecht7.5
- 18MedemblikNorth Holland7.4
- 19AmsterdamNorth Holland7.3
- 20NoordwijkerhoutSouth Holland7.2
+ 17 more cities, 7.2 µg/m³ and below
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.