What is the air quality trend in Trier?

Over the past 8 days, Trier had an average AQI of 44 based on station measurements. The worst day was 2026-05-25 with AQI 56.

How is Trier air quality measured?

Air quality in Trier 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 Trier, Germany

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-28	40	15–70	9.9 µg/m³	13.9	23h	8
2026-05-27	45	31–81	11.5 µg/m³	13.6	24h	10
2026-05-26	51	28–139	14.4 µg/m³	10.6	24h	11
2026-05-25	56	23–165	17.7 µg/m³	7.0	24h	11
2026-05-24	53	27–115	14.6 µg/m³	13.7	24h	13
2026-05-23	36	22–70	8.9 µg/m³	11.3	24h	9
2026-05-22	48	23–102	13.7 µg/m³	10.3	24h	11
2026-05-21	28	28–28	6.7 µg/m³	8.3	1h	8

Back to Trier Air Quality