What is the air quality trend in Velsen-Zuid?

Over the past 7 days, Velsen-Zuid had an average AQI of 38 based on station measurements. The worst day was 2026-05-22 with AQI 67.

How is Velsen-Zuid air quality measured?

Air quality in Velsen-Zuid is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Velsen-Zuid, Netherlands

Name: Velsen-Zuid Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Velsen-Zuid, Netherlands.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

86h

PM2.5 Station

86h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-28	6	2–9	1.4 µg/m³	1.8	6h	1
2026-05-27	33	3–92	9.9 µg/m³	10.4	10h	1
2026-05-26	29	2–115	8.5 µg/m³	9.5	19h	1
2026-05-25	8	4–22	2.0 µg/m³	2.3	13h	1
2026-05-24	66	4–124	22.6 µg/m³	25.2	13h	1
2026-05-23	58	3–134	18.6 µg/m³	20.2	24h	1
2026-05-22	67	67–67	19.7 µg/m³	20.0	1h	1

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