SmogRank / Countries / The Netherlands / North Holland
Most polluted cities in North Holland, The Netherlands
8 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Medemblik at 8.8 µg/m³, #416 in the world.
8 good
- 1Medemblik 8.80.6×
- 2Haarlemlow-cost sensors 7.00.5×
- 3Velserbroek 6.90.5×
- 4Zaanstad 6.80.5×
- 5Amsterdam 6.40.4×
- 6Velsen-Zuid 5.80.4×
- 7Badhoevedorp 4.20.3×
- 8Purmerend 2.90.2×
Estimated: cities without a monitor
North Holland cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Hoofddorp | ≈ 10 µg/m³ |
| Alkmaar | ≈ 9 µg/m³ |
| Hilversum | ≈ 10 µg/m³ |
| Amstelveen | ≈ 10 µg/m³ |
| Zaandam | ≈ 10 µg/m³ |
| Hoorn | ≈ 9 µg/m³ |
| Den Helder | ≈ 9 µg/m³ |
| Heerhugowaard | ≈ 9 µg/m³ |
| Huizen | ≈ 10 µg/m³ |
| Heemskerk | ≈ 10 µg/m³ |
| Beverwijk | ≈ 10 µg/m³ |
| Castricum | ≈ 10 µg/m³ |
| IJmuiden | ≈ 10 µg/m³ |
| Nieuw-Vennep | ≈ 10 µg/m³ |
| Bussum | ≈ 10 µg/m³ |
| Bergen | ≈ 9 µg/m³ |
| Uithoorn | ≈ 10 µg/m³ |
| Heemstede | ≈ 10 µg/m³ |
| Diemen | ≈ 10 µg/m³ |
| Assendelft | ≈ 10 µg/m³ |
| Heiloo | ≈ 9 µg/m³ |
| Aalsmeer | ≈ 10 µg/m³ |
| Volendam | ≈ 10 µg/m³ |
| Schagen | ≈ 9 µg/m³ |
| Weesp | ≈ 10 µg/m³ |
| Enkhuizen | ≈ 9 µg/m³ |
| Krommenie | ≈ 10 µg/m³ |
| Naarden | ≈ 10 µg/m³ |
| Zandvoort | ≈ 9 µg/m³ |
| Julianadorp | ≈ 9 µg/m³ |
Updated 2026-10-01 19:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.