What is the air quality trend in Willich?

Over the past 8 days, Willich had an average AQI of 40 based on station measurements. The worst day was 2026-05-24 with AQI 45.

How is Willich air quality measured?

Air quality in Willich 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 Willich, Germany

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 7 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	38	27–48	9.1 µg/m³	13.8	5h	14
2026-05-29	44	23–169	13.1 µg/m³	8.9	24h	16
2026-05-28	37	20–61	9.0 µg/m³	2.1	24h	16
2026-05-27	42	25–56	10.1 µg/m³	8.4	24h	15
2026-05-26	39	26–56	9.4 µg/m³	4.6	24h	15
2026-05-25	36	25–61	8.6 µg/m³	5.7	24h	16
2026-05-24	45	31–64	11.3 µg/m³	15.1	24h	18
2026-05-23	41	30–49	9.8 µg/m³	14.0	19h	17

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