What is the air quality trend in Altona-Altstadt?

Over the past 3 days, Altona-Altstadt had an average AQI of 48 based on station measurements. The worst day was 2026-10-21 with AQI 97.

How is Altona-Altstadt air quality measured?

Air quality in Altona-Altstadt 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 Altona-Altstadt, Germany

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

Historical PM2.5 and AQI trend from monitoring stations near Altona-Altstadt, Germany.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

38h

PM2.5 Station

38h · 2 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	97	83–112	33.7 µg/m³	42.0	12h	2
2026-10-20	40	2–121	11.8 µg/m³	14.5	19h	2
2026-10-19	7	3–23	1.8 µg/m³	2.4	7h	1

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