Most polluted cities in The Netherlands, 2023

No city in The Netherlands had measurements on 70% of the days, so 2023 has no board for The Netherlands.

Good0–9.0

Moderate9.1–35.4

Sensitive groups35.5–55.4

Unhealthy55.5–125.4

Very unhealthy125.5–225.4

Hazardous225.5+