What is the air quality trend in Jena?

Over the past 8 days, Jena had an average AQI of 39 based on station measurements. The worst day was 2026-07-14 with AQI 49.

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
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

160h

PM2.5 Station

160h · 16 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	20	13–30	4.7 µg/m³	9.7	19h	13
2026-07-20	24	13–52	5.9 µg/m³	9.5	24h	11
2026-07-19	43	17–124	11.6 µg/m³	11.9	24h	10
2026-07-18	46	29–106	11.5 µg/m³	17.1	23h	11
2026-07-17	49	22–308	19.6 µg/m³	16.8	24h	11
2026-07-16	44	30–132	11.6 µg/m³	17.0	22h	13
2026-07-15	37	29–57	9.0 µg/m³	16.4	21h	13
2026-07-14	49	36–73	13.3 µg/m³	13.5	3h	6

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