What is the air quality trend in Jena?

Over the past 8 days, Jena had an average AQI of 38 based on station measurements. The worst day was 2026-10-21 with AQI 64.

How is Jena air quality measured?

Air quality in Jena 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 Jena, Germany

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

139h

PM2.5 Station

139h · 13 stations

Temperature GFS model

27pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	64	62–68	18.3 µg/m³	22.7	9h	14
2026-10-20	50	25–62	12.9 µg/m³	17.0	21h	13
2026-10-19	44	23–65	11.0 µg/m³	14.3	19h	14
2026-10-18	29	16–64	7.2 µg/m³	9.7	19h	14
2026-10-17	22	8–39	5.3 µg/m³	7.8	20h	13
2026-10-16	35	21–54	8.5 µg/m³	13.4	19h	14
2026-10-15	34	22–52	8.2 µg/m³	13.6	20h	14
2026-10-14	28	17–45	6.8 µg/m³	12.3	12h	10

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