What is the air quality trend in Herne?

Over the past 8 days, Herne had an average AQI of 51 based on station measurements. The worst day was 2026-07-16 with AQI 68.

How is Herne air quality measured?

Air quality in Herne 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 Herne, Germany

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

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

Current AQI
Good CAMS model

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	40	10–181	14.1 µg/m³	5.7	17h	12
2026-07-20	50	20–127	14.2 µg/m³	3.7	24h	12
2026-07-19	40	21–62	9.9 µg/m³	4.8	24h	13
2026-07-18	51	28–81	13.3 µg/m³	17.1	24h	12
2026-07-17	60	36–125	17.1 µg/m³	17.8	24h	9
2026-07-16	68	33–187	23.7 µg/m³	14.3	24h	9
2026-07-15	57	35–153	15.6 µg/m³	12.4	24h	6
2026-07-14	48	35–54	11.7 µg/m³	9.4	7h	6

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