What is the air quality trend in Køge?

Over the past 8 days, Køge had an average AQI of 139 based on station measurements. The worst day was 2026-07-16 with AQI 278.

How is Køge air quality measured?

Air quality in Køge 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 Køge, Denmark

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

Historical PM2.5 and AQI trend from monitoring stations near Køge, Denmark.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	4	3–5	1.0 µg/m³	1.9	14h	2
2026-07-20	4	2–6	0.8 µg/m³	1.9	24h	2
2026-07-19	5	2–12	1.3 µg/m³	2.4	24h	2
2026-07-18	25	11–52	6.0 µg/m³	10.2	24h	3
2026-07-17	248	28–321	198.0 µg/m³	205.8	24h	2
2026-07-16	278	217–336	229.0 µg/m³	237.7	24h	2
2026-07-15	275	224–315	225.3 µg/m³	233.9	24h	2
2026-07-14	275	187–332	225.2 µg/m³	233.8	10h	2

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