What is the air quality trend in Châlons-en-Champagne?

Over the past 21 days, Châlons-en-Champagne had an average AQI of 52 based on station measurements. The worst day was 2026-08-18 with AQI 81.

How is Châlons-en-Champagne air quality measured?

Air quality in Châlons-en-Champagne 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 Châlons-en-Champagne, France

Name: Châlons-en-Champagne Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Châlons-en-Champagne, France.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

434h

PM2.5 Station

434h · 11 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	51	15–114	13.7 µg/m³	18h	5
2026-09-04	43	9–87	11.4 µg/m³	22h	4
2026-09-03	47	5–95	13.5 µg/m³	23h	4
2026-09-02	29	4–54	6.9 µg/m³	24h	4
2026-09-01	46	8–94	12.8 µg/m³	24h	5
2026-08-31	36	8–73	9.2 µg/m³	23h	5
2026-08-30	49	4–151	14.7 µg/m³	24h	5
2026-08-29	57	12–234	23.1 µg/m³	24h	4
2026-08-28	49	21–113	13.1 µg/m³	21h	5
2026-08-27	64	30–164	20.2 µg/m³	21h	6
2026-08-26	67	18–154	20.7 µg/m³	23h	4
2026-08-25	55	3–134	16.7 µg/m³	21h	4
2026-08-24	46	10–152	12.8 µg/m³	23h	4
2026-08-23	44	17–124	11.9 µg/m³	20h	4
2026-08-22	44	12–111	11.5 µg/m³	18h	4
2026-08-21	67	4–268	27.4 µg/m³	22h	4
2026-08-20	65	20–159	21.1 µg/m³	21h	4
2026-08-19	60	14–157	18.6 µg/m³	21h	5
2026-08-18	81	13–299	35.6 µg/m³	20h	6
2026-08-17	75	10–500	54.9 µg/m³	20h	4
2026-08-16	30	30–30	7.1 µg/m³	1h	6

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