What is the air quality trend in Châteaudun?

Over the past 15 days, Châteaudun had an average AQI of 37 based on station measurements. The worst day was 2026-05-26 with AQI 55.

How is Châteaudun air quality measured?

Air quality in Châteaudun 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 Châteaudun, France

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

Historical PM2.5 and AQI trend from monitoring stations near Châteaudun, France.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

331h

PM2.5 Station

331h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	48	26–211	16.6 µg/m³	22h	4
2026-05-28	45	27–66	11.1 µg/m³	22h	4
2026-05-27	44	24–159	12.0 µg/m³	24h	4
2026-05-26	55	31–115	14.7 µg/m³	24h	4
2026-05-25	54	27–195	17.1 µg/m³	24h	4
2026-05-24	40	20–106	10.4 µg/m³	24h	4
2026-05-23	31	7–71	7.6 µg/m³	24h	4
2026-05-22	31	18–78	7.9 µg/m³	24h	4
2026-05-21	34	23–46	8.2 µg/m³	24h	4
2026-05-20	51	27–255	18.3 µg/m³	24h	4
2026-05-19	22	8–36	5.3 µg/m³	24h	4
2026-05-18	37	9–184	12.7 µg/m³	24h	4
2026-05-17	27	6–114	7.1 µg/m³	24h	4
2026-05-16	27	8–74	6.8 µg/m³	22h	5
2026-05-15	22	22–22	5.3 µg/m³	1h	4

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