What is the air quality trend in Achern?

Over the past 15 days, Achern had an average AQI of 41 based on station measurements. The worst day was 2026-05-17 with AQI 55.

How is Achern air quality measured?

Air quality in Achern 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 Achern, Germany

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

334h

PM2.5 Station

334h · 7 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	35	25–42	8.3 µg/m³	8h	8
2026-05-29	41	22–147	10.7 µg/m³	24h	10
2026-05-28	44	27–67	10.8 µg/m³	24h	10
2026-05-27	41	28–55	10.0 µg/m³	24h	10
2026-05-26	42	14–69	10.5 µg/m³	24h	11
2026-05-25	43	30–74	10.7 µg/m³	24h	10
2026-05-24	42	19–60	10.2 µg/m³	24h	10
2026-05-23	47	28–87	11.9 µg/m³	24h	9
2026-05-22	36	18–55	8.7 µg/m³	24h	9
2026-05-21	37	26–65	9.0 µg/m³	24h	10
2026-05-20	34	20–45	8.1 µg/m³	24h	10
2026-05-19	47	18–177	14.4 µg/m³	24h	11
2026-05-18	35	18–62	8.8 µg/m³	24h	9
2026-05-17	55	20–157	15.9 µg/m³	23h	13
2026-05-16	47	26–160	13.9 µg/m³	15h	14

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