What is the air quality trend in Maarssen?

Over the past 21 days, Maarssen had an average AQI of 23 based on station measurements. The worst day was 2026-07-31 with AQI 73.

How is Maarssen air quality measured?

Air quality in Maarssen 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 Maarssen, Netherlands

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

237h

PM2.5 Station

237h · 8 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	19	4–35	4.6 µg/m³	9h	3
2026-08-07	25	4–35	5.8 µg/m³	16h	5
2026-08-06	29	25–33	6.9 µg/m³	11h	4
2026-08-05	23	15–34	5.6 µg/m³	10h	2
2026-08-04	33	2–66	8.6 µg/m³	23h	1
2026-08-03	24	2–67	5.9 µg/m³	19h	1
2026-08-02	25	4–46	6.0 µg/m³	2h	2
2026-08-01	4	4–4	1.1 µg/m³	1h	1
2026-07-31	73	26–115	23.8 µg/m³	13h	3
2026-07-30	15	5–37	3.7 µg/m³	24h	1
2026-07-29	17	4–36	4.1 µg/m³	15h	1
2026-07-28	6	2–10	1.4 µg/m³	16h	1
2026-07-27	17	15–18	4.1 µg/m³	3h	3
2026-07-26	19	1–32	4.6 µg/m³	15h	1
2026-07-25	32	5–66	8.5 µg/m³	24h	1
2026-07-24	17	1–43	4.1 µg/m³	15h	2
2026-07-23	20	11–28	4.7 µg/m³	9h	3
2026-07-22	24	21–25	5.6 µg/m³	7h	5
2026-07-21	24	24–24	5.8 µg/m³	1h	6
2026-07-20	26	25–29	6.4 µg/m³	3h	4
2026-07-19	28	28–28	6.7 µg/m³	1h	3

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