What is the air quality trend in Aachen?

Over the past 21 days, Aachen had an average AQI of 40 based on station measurements. The worst day was 2026-10-19 with AQI 82.

How is Aachen air quality measured?

Air quality in Aachen 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 Aachen, Germany

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

Historical PM2.5 and AQI trend from monitoring stations near Aachen, Germany.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

479h

PM2.5 Station

479h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	46	21–86	12.2 µg/m³	11h	2
2026-10-20	67	53–97	19.8 µg/m³	24h	2
2026-10-19	82	55–176	28.1 µg/m³	24h	2
2026-10-18	74	25–155	23.5 µg/m³	24h	2
2026-10-17	14	4–39	3.5 µg/m³	24h	2
2026-10-16	25	7–61	6.2 µg/m³	24h	2
2026-10-15	22	6–61	5.4 µg/m³	24h	2
2026-10-14	36	13–60	8.8 µg/m³	24h	2
2026-10-13	14	4–29	3.4 µg/m³	24h	1
2026-10-12	30	4–71	7.6 µg/m³	24h	2
2026-10-11	19	4–44	4.6 µg/m³	24h	2
2026-10-10	24	6–67	6.0 µg/m³	24h	2
2026-10-09	12	4–22	2.9 µg/m³	24h	2
2026-10-08	24	4–178	8.9 µg/m³	24h	2
2026-10-07	59	17–166	19.0 µg/m³	24h	2
2026-10-06	48	8–93	14.3 µg/m³	24h	2
2026-10-05	54	12–91	16.2 µg/m³	24h	2
2026-10-04	78	14–194	30.6 µg/m³	24h	2
2026-10-03	55	14–114	16.6 µg/m³	24h	2
2026-10-02	42	6–106	12.3 µg/m³	24h	2
2026-10-01	21	11–39	5.0 µg/m³	12h	2

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