What is the air quality trend in Alkmaar?

Over the past 8 days, Alkmaar had an average AQI of 43 based on station measurements. The worst day was 2026-05-22 with AQI 86.

How is Alkmaar air quality measured?

Air quality in Alkmaar 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 Alkmaar, Netherlands

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

Historical PM2.5 and AQI trend from monitoring stations near Alkmaar, Netherlands.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

138h

PM2.5 Station

138h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	58	4–120	18.7 µg/m³	20.9	17h	1
2026-05-28	10	4–19	2.4 µg/m³	2.7	11h	1
2026-05-27	13	2–38	3.1 µg/m³	3.6	20h	1
2026-05-26	52	3–122	16.5 µg/m³	18.3	24h	1
2026-05-25	14	4–33	3.4 µg/m³	3.6	22h	1
2026-05-24	40	1–116	13.1 µg/m³	15.0	18h	1
2026-05-23	75	11–123	25.1 µg/m³	28.7	24h	1
2026-05-22	86	85–86	28.6 µg/m³	29.2	2h	1

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