What is the air quality trend in Sønderborg?

Over the past 15 days, Sønderborg had an average AQI of 42 based on station measurements. The worst day was 2026-07-27 with AQI 62.

How is Sønderborg air quality measured?

Air quality in Sønderborg 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 Sønderborg, Denmark

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

291h

PM2.5 Station

291h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	26	18–41	6.4 µg/m³	5h	3
2026-08-07	48	13–127	13.6 µg/m³	20h	2
2026-08-06	37	20–68	9.3 µg/m³	24h	4
2026-08-05	61	20–407	27.9 µg/m³	24h	4
2026-08-04	40	18–161	11.4 µg/m³	22h	3
2026-08-03	43	4–125	11.9 µg/m³	21h	3
2026-08-02	38	15–53	9.1 µg/m³	20h	2
2026-08-01	32	10–58	7.9 µg/m³	20h	3
2026-07-31	31	11–52	7.4 µg/m³	17h	3
2026-07-30	43	13–78	11.2 µg/m³	18h	2
2026-07-29	37	7–78	9.4 µg/m³	21h	2
2026-07-28	41	14–104	10.9 µg/m³	20h	2
2026-07-27	62	1–307	31.5 µg/m³	22h	2
2026-07-26	57	17–189	21.6 µg/m³	23h	2
2026-07-25	44	15–134	13.1 µg/m³	14h	2

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